It's been six years since that summer adventure when Taichi Yagami and the rest of the DigiDestined crossed over to the Digital World. And nearly three years have passed since the final battle between Hikari Yagami's group and BelialVamdemon. As the peaceful days passed by, at some point the gate to the Digital World closed. Not even the DigiDestined know what caused this, and time alone continues to pass.
On one such day, a Kuwagamon suddenly appears in Odaiba. Its rampage leaves the town in ruins, and the people there in turmoil. Taichi happens to catch sight of the Kuwagamon, and he chases after it all by himself in an effort to halt its rampage. But there's nothing he can do against a Kuwagamon.
"It's no use... I can't do anything about this alone..."
Just as the Kuwagamon roars and attacks Taichi, his Digivice begins to emit a bright light...
"Taichi, look how big you've grown!"
With the sound of that nostalgic voice, the story once again begins to move in a big way.
Taichi Yagami, age 17; high school student.
The adventure now evolves once again.

Digimon Adventure tri. (Japanese: デジモンアドベンチャーtri., Hepburn: Dejimon Adobenchā Torai) is a 2015 Japanese action-adventure anime film series produced by Toei Animation. It is a six-part series of films in Akiyoshi Hongo's Digimon franchise, serving as a direct sequel to the first two television series, Digimon Adventure and Digimon Adventure 02, and celebrates the anime franchise's 15th anniversary. The first film, Saikai (再会, Reunion), was released on November 21, 2015 and will be released on region-free DVD and Blu-ray in Japan on December 18, 2015. The second film, Ketsui (決意 , Determination), will be released on March 12, 2016. The films are being streamed in episodic format outside of Japan by Crunchyroll.