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 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.

Mutta has completed NEEMO training. His final idea impressed many people in NASA. Meanwhile, back in Houston, Hibito continues his rehabilitation.

It's New Year's, and the Nanba family is together in Houston to celebrate. Mutta feels good, as he trains for the moon and talks to Serika, but Hibito doesn't seem to be in a celebratory mood.