Digimon Adventure tri. Part 1: Reunion (2015) is a Adventure, Action, Animation, Drama, Family, Fantasy, Science Fiction film that follows after years of inactivity, the DigiDestined regroup with their Digimon to save their world, but have the years changed their characters too much? Currently, you can watch Digimon Adventure tri. Part 1: Reunion on Amazon Prime Video, Crunchyroll Amazon Channel, Amazon Prime Video with Ads, Shout! Factory Amazon Channel. Streaming availability may vary by country and platform over time. It has a user rating of 6.8 out of 10 from 100 votes. Fans of adventure movies may also want to explore similar titles below.