The fifth Digimon movie is set in the third season, the Tamers Universe.

During summer vacation, Takato is sent to see his cousin in Okinawa. His parents think it`ll be good for him to travel and spend some time in the small village, away from the big city. Takato`s not exactly thrilled about the trip, but as he stays with his cousin, Kai, they begin to form an understanding. Of course, keeping Guilmon a secret is a chore in itself.

Back in Tokyo, a brutal Digimon confronts Ruki and defeats Renamon, before wreaking havok and promising to return.

In Okinawa, a the daughter of a famous software giant is chased by a shark-type Digimon, and Takato sends Guilmon out to help, revealing the existance of Digimon to the girl and Kai. The girl recognizes a form of Digimon, called a `V-Pet`. As more and more cluse start to point towards the company producing V-Pets, Ruki meets Takato and Jenrya-Li, to get to the bottom of the mystery.

But when the true plot beneath the V-Pets is uncovered, will the three Ultimate level Digimon and their Tamers be ready to stop an evil that has crossed dimensions to put it`s plan in motion? The adventure begins, and ends, with this...