Monarch S2E10 Review: The Rift Opens, Kentaro Walks Away, and Lee Shaw Says Goodbye
What happens — the short version (spoilers)
- Keiko learns that Lee saw her in Axis Mundi through Suzuki's quantum link and chose not to change the future in which he knew she survived.
- Isabel keeps Titan X in a synaptic feedback loop to draw Kong, making Kentaro choose between the suffering Titan and a chance to recover another Hiroshi.
- May and Tim take an Apex field vehicle, while Keiko drives into the Titan fight to pull Cate clear.
- May discovers the system was built to keep Titan X enraged, but the mother tears free of the link while protecting her egg.
- Kentaro leaves with Isabel for Axis Mundi despite Cate's plea, believing another version of their father may still be there.
- Cate helps guide Titan X toward Billy's dormant rift; the opening activates and the mother crosses home.
- Keiko hears Lee say goodbye across the rift, and the epilogue leaves Cate and Keiko running a smaller Monarch operation while Lee tracks Kentaro and Isabel.
Billy Randa's rift gives Titan X a road home, but getting her there separates Cate from her brother and forces Keiko to hear what Lee chose for her in Axis Mundi.
The tenth hour begins with a useful correction. Keiko believed Billy abandoned Hiroshi, but the rift he found shows her that he was trying to put their family back together. His wild anthill theory was right: the openings connect, and this one is Billy’s Grand Central Station, a dormant passage on Skull Island that should wake when Titan X reaches it. The route home exists. The problem is that Isabel Simmons has a furious mother wired into a bunker, Kong is closing in on Isabel’s creature call, and Kentaro has decided both animals are acceptable losses if Axis Mundi might contain a Hiroshi he can still save.
That gives the hour two rescue missions moving in opposite directions. Cate, Keiko, May, Tim, and Lee are trying to return a living creature to her world. Kentaro is willing to hold that creature in pain for the chance to retrieve one possible version of his father. Between them sits Lee’s own old decision to preserve the past by leaving Keiko alone in Axis Mundi. The monster fight is enormous, but the cleanest damage is done in two conversations: Keiko telling Lee he had no right to choose her life, and Cate asking Kentaro not to spend his.
Lee admits he saw Keiko in Axis Mundi, and Isabel makes Kentaro choose between Titan X and Hiroshi
Lee and Keiko stand at Billy’s rift while Skull Island’s smaller creatures stream past them without attacking. They are not hunting. They are fleeing whatever is coming. Lee spots the same old Chinook used to steal Titan X’s egg, now broadcasting a creature call loud enough to draw Kong toward Isabel’s bunker. The pieces are finally on one board: the Titan, her egg, Kong, and the rift Billy found.
Then Keiko asks how Lee put a tracker on Titan X in the first place. Suzuki’s device, Lee explains, became a quantum telephone that connected him to his earlier self inside Axis Mundi. He saw Keiko there. He was waiting for her. He also kept away because the only future in which he knew she survived was the one that had already happened.
Keiko does not let sacrifice tidy up theft. “That wasn’t your choice. It was my choice to make.” She could have been there for Hiroshi. She could have had years with him; he might still be alive. Lee answers that this is a lot of could-haves, which is true and completely inadequate. He protected the outcome he knew by taking every unknown outcome away from her.
Inside the bunker, Isabel uses the same logic with less tenderness. Titan X is fighting the synaptic link because she has an egg to protect, and Kentaro can see what the machine is doing to her. When he asks whether this is necessary, Isabel reduces the decision to a countdown: if the animal outside matters more than his father, he needs to say so before Kong arrives. Kentaro stays.
May takes Isabel’s field vehicle, and Keiko drives into Kong’s fight to pull Cate out
May and Tim reach the bunker by turning Isabel’s field crew’s fear against them. May starts talking about a rampaging 90,000-ton ape; the geology PhD behind the wheel decides Isabel is not paying enough for heroics and gives up the vehicle. It is a funny, compact reversal, and it gets May and Tim to Lee and Keiko just as the four of them finally assemble the same plan. Isabel has Titan X. Billy found the rift. Keiko has a recording of the Titan’s call. If the Titan’s own voice can bring the confused animal to the opening, the rift may do the rest.
The group divides because Cate and Kentaro are still inside. May and Tim head for Isabel’s controls. Keiko goes for her grandchildren. Cate, having escaped confinement, is already exposed below the cliff while Kong and Titan X tear into each other. The fight stays at human height, with Cate scrambling to keep her feet while the Titans’ roars swallow every other sound in the valley.
Keiko does not study the danger from cover. She drives straight into it, leans on the horn until Cate sees her, then catches her when Cate slips out of reach. The rescue ends with Keiko hanging on to the granddaughter whose future Lee once decided for her. Grandmother and granddaughter scramble clear together while the Titans keep fighting.
May breaks into Isabel’s command center, but Titan X tears free of the feedback loop
May and Tim’s route upstairs is less majestic and almost as satisfying. Tim drops one guard with the muscle memory of a backup high-school punter, then heads into the elevator admitting that the kick really hurt. In the command center, May orders Isabel’s people away from the consoles and tries to lower the synaptic link herself.
The controls refuse. The system is locked at maximum capacity, feeding the Titan’s resistance back into the signal. May sees the design underneath the code: Isabel’s machine was never meant to steer Titan X. It was built to keep her enraged enough to call Kong and sustain the conditions Isabel needs.
The machine still loses. Titan X rips herself free of the link while Kong stands in front of her, and May gives the victory to the right place: “Her instincts are stronger than any computer code I could write.” A mother defending her egg breaks what a room full of Isabel’s hardware cannot hold. She is free to go home, but the assault has scrambled her bearings. Billy’s rift is waiting in the other direction.

Kentaro chooses Isabel’s search over Cate, and Cate makes herself the signal for Titan X
Cate finds Kentaro before the Chinook leaves and asks him not to go. His answer finally explains why Isabel’s promise got through. Hiroshi entered Axis Mundi after G-Day, during the year his children thought he had disappeared. Kentaro now believes the father they watched die may have been one version among others, with another Hiroshi still trapped somewhere inside. Cate insists that Hiroshi is gone. Kentaro tells her their father was trying to get back to them.
Neither sibling can move the other. Kentaro invites Cate to come, and she calls the idea impossible. He reaches for the argument their family can never resist: “So was saving you… until we did it.” Then he leaves her to pursue Isabel’s search. When the others ask where he is, Cate has to say twice that he is not coming.
The first attempt to guide Titan X proves Cate’s alternative. Lee flies the Chinook in front of her while the group plays the recording, but the amplifiers blow just as the Titan begins to turn. Cate moves to the open ramp. She does not claim control, and Lee does not pretend she has it. He only trusts that Titan X may follow the person who heard her before anyone else did. Cate steadies herself against the roar and keeps speaking: “I’m right here… This way.” Titan X turns toward her.
Billy’s rift sends Titan X home, and Lee tells Keiko he is saying goodbye
The flight into the valley is the hour’s best sustained piece of action because its objective is so plain. Keep the Chinook close enough for Titan X to see Cate. Stay far enough ahead not to be swatted out of the sky. Lead her to a hole that looks like dead rock and trust Billy was right about what wakes it.
He was. Titan X reaches the site, the rift opens, and the mother crosses. The machine built to enrage her fails; the recording and Cate’s calm presence give the rescue another route. Billy’s wild network of connected tunnels delivers one last improbable solution.
Then a new disturbance at the rift stops Lee, and the sound falls out of his exchange with Keiko. She can see his mouth moving without hearing the words. When the connection clears, she asks what he is saying. “I’m saying goodbye.” The hour refuses to turn the moment into a clean death or a clean departure. Later, Tim says Shaw has gone dark. The closing sequence confirms he is alive, but not that Keiko understood why he left.
Verdugo gives Cate and Keiko a basement, and Lee picks up the trail from A-Wut
Monarch’s memorial wall makes room for the people who did not come back. Cate worries that Hiroshi would reject the institution’s tribute after the way they parted. Keiko reads the inscription — discover and defend — and decides her son would accept it as a truthful epitaph. Keiko’s own plaque is still there too; explaining her return from the dead would send the world rushing toward Axis Mundi in search of youth and second chances.
Verdugo’s answer is Monarch 2.0: a basement operation built around science, discovery, Tim, May, Cate, and Keiko. She asks Cate and Keiko to run it, then gives them the assignment no one else can handle delicately. Find Kentaro. The family business survives, smaller and closer to what its founders intended, with a grandmother and granddaughter in charge of bringing one of their own back.
Lee has already started. A-Wut tells him that a young Japanese man and an American woman came asking about an object they believe can open the door to everything they want. The description points straight at Kentaro and Isabel. Lee follows A-Wut into the dark, finds an unnamed creature waiting there, and ends the hour with a promise: “I’ll see you soon.” It is a hook, not an answer, but at least Shaw’s silence now has a direction.
Verdict
S2E10 works because the Titan plot and the Randa plot stop competing for the same hour. Isabel’s synaptic rig turns a mother’s distress into fuel. Lee’s old choice turns Keiko’s lost life into a fixed outcome. Kentaro turns Titan X and Kong into collateral for a second chance with Hiroshi. Cate and Keiko answer all three by refusing to call control a form of care. Cate standing in an open helicopter while Titan X decides whether to follow holds the argument better than the opening rift.
The rescue ends, and the final ten minutes rush their transitions. Lee’s goodbye is deliberately disorienting, but the jump from that silent encounter to his mission with A-Wut withholds enough connective tissue to make the emotion harder to place. Isabel also slips out of the bunker plot with less consequence than the machine she built deserves. Those are real gaps in an otherwise precise payoff. Keiko gets to challenge the man who stole a choice from her, Cate loses Kentaro without giving up on him, and Billy’s theory finally saves a creature instead of making one useful. For a series built on a family institution that keeps confusing those two things, that is the right rescue.
Rating: 8.8/10
More episodes from Monarch: Legacy of Monsters — Season 2 — The MonsterVerse expands — Randa family secrets and new titans, episode by episode. Jump to any episode in the season:
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Reviewed by Mira Vance · QuizFandom Editor & Lead Reviewer. Every rating is an honest per-watch assessment from the desk that also writes the quizzes — not a press release rehash.