Rei goes to an anime convention and ends up in a world created by the desires of anime fans. Rei doesn't know how to get back and the world starts to collapse because the convention is coming to a close.

Hailing from America, Jabberwock—a street basketball team with skills comparable to those of the NBA—has come to Japan to play an exhibition match against Strky, a team of former third-year students who once played in the Interhigh and Winter Cup. However, due to the vast difference in skill, Jabberwock easily wins. Their captain, Nash Gold Jr., mocks the basketball style of all players in Japan by comparing them to monkeys.

Infuriated by the nasty comment, Kagetora Aida challenges them to a revenge match. Because of pride and the belief that the results will be no different, Nash accepts the challenge. Kagetora then assembles Vorpal Swords, a team composed of the Generation of Miracles, including Kuroko Tetsuya and Kagami Taiga, for they are the only ones who stand a chance against a foe that seems unbeatable from every angle.

The movie begins with Fuyuki Hinata and the Keroro Platoon exploring an abandoned temple in the mountaintop city of Machu Picchu in Peru. While on the exploration, Keroro accidentally sets off a trap, and by chance they find a hidden chamber with a large blue crystal in the center, on a stand that has a key in it. Keroro leans on the key, causing the room to activate a mysterious machine, this caused the entire temple to shake. As soon as the group realized what was happening, they run out of the room. While running, Keroro accidentally loses his Kero Ball while Fuyuki catches a fleeting glimpse of a glowing young woman as he is running out, and tells Keroro that there was a girl in the room, but he is forced to leave the room before he can say anything else. The group successfully escapes, while the girl (now sprouting a pair of glowing wings) watches them leave - while back in the chamber, something is growing within the crystal...

This is the condensed theatrical adaptation of the original TV series' first season.