The story tells the adventures of the boy, 21 emon, engaged in the management of a hotel belonging to his family for years. In his problems, 21 emons is helped by the robot Gonsuke and the little alien Monga.

Pen-Pen, the hat-and-tie-wearing prince of Penguin Land, turns up unexpectedly on little Mika's doorstep. and invites himself and his zany friends to stay.

Nobita and Doraemon venture to the Heavy Smokers Forest in the Congo, where they find a stray dog and a giant statue. After discovering that they are wanted for trespassing on isolated kingdom land, Nobita and the rest must utilize the power of the mysterious statue to prove their worth.

As Nobita, Shizuka, Gian, and Suneo are auditioning for a role in their school's play based on "Journey to the West", the coveted role of Son Goku is hotly contested. After suggesting that the real Great Sage Equal to Heaven should play himself, knowing that the story is only a legend, Nobita and Doraemon go back in time to find their own fake Monkey King, but arrive in present day with the story's demons having taken over the world. The only way for things to go back to normal is for Nobita and pals to reenact the tale...for real!

A young boy named Kochan is given the ability to transform into Hanuman after he was murdered, and now he and the 6 Ultra Brothers must fight against five monsters who were awakened from the destruction of a rocket test site.