After determining that he indeed doesn't come from Earth, they decide to return him back to his home planet.

Down there, they meet with Dr. Capek and Kururimpa who heal the child robot and provide information about the planet.

The child robot reveals himself to be Poko after telling Nobita in the middle of the night, he then questions him about what happened to his mother and needs to be healed once more after trying to leave alone.

Poko then successfully leaves alone to search for Maria and is later attacked by the Queen's army.

He is locked up and meets Maria who explains that Jeanne's father died in an accident and how Dester has since influenced her opinion.

Doraemon is then forced to fight in the robot arena but wins thanks to his gadgets and gets saved by Nobita and his friends.

Doraemon attempts a rescue of Maria but Dester sends the rocket crashing into the planet's moon.

Once they repair the time machine, Nobita and his friends say goodbye to everyone in the Robot Kingdom.