Mutta and Kenji have overcome their initial shock after hearing that only one of them will be chosen to go to the moon. Now that they're working together again, everything seems to be going right with their construction of the Moonbase.

Mutta and Kenji are forced to compete for the chance to go to the moon. Initially unsure as to what to do, Mutta benefits from Andy's advice, which helps him settle down and devise a new plan.

Only one of each team's two Ants will be chosen to go to the moon. Since the beginning of his journey, Mutta has worked with Kenji, so he isn't sure what to do.

Mutta is now underwater participating in NEEMO training. He's happy to be assigned to the same team as Kenji, but it turns out that he shouldn't be celebrating.

Mutta's idea for improving the lunar rover has earned him the right to participate in NEEMO training. He has taken one step toward the moon.

Hibito has returned to Houston from Russia. At the same time, Mutta begins his journey to the moon with NEEMO training.

NASA and JAXA have decided to bring Hibito back to Houston, placing him in a supporting role. Hibito has no choice but to pack up and make his farewells.

Inspired by Olga's performance, Hibito continues his rehabilitation. Ivan comes up with a unique approach that may start Hibito down the path to recovery.

Hibito continues to struggle in rehab. Russian astronaut Ivan Tolstoy shows Hibito videos of his daughter as a child, learning ballet. Will the videos give Hibito his answer?

Mutta has convinced Chief Butler to allow him to start training for lunar missions. Meanwhile, Hibito is in Russia, trying to overcome his panic disorder.

Mutta's proposal to add a windshield to the lunar rover is received well. However, Chief Butler is still reluctant to allow Mutta to train for lunar missions. Mutta decides he must try something more dramatic.

Mutta's proposal to improve the lunar rover is received well. But he still hasn't convinced Chief Butler to let him train for lunar missions. Desperate for ideas, Mutta researches Chief Butler's history for clues.

Mutta comes up with an idea to prevent vehicular accidents on the moon. Will NASA accept his proposal?

Hibito struggles with the panic disorder that's afflicted him since his ordeal on the moon. However, he requests that his condition be kept secret from Mutta, who may have found a way to improve the lunar rover.

Mutta and Hibito are selected for a magazine cover. Mutta is excited, but he notices that Hibito is acting strangely.

After completing training, Mutta is offered a spot on the backup crew for an upcoming ISS mission. This is a golden opportunity for Mutta to make it to space quickly. But he must consider what he truly wants to do.