Digimon Digital Monsters (Season Three)

Digimon Digital Monsters  (デジモンアドベンチャー, Dejimon Adobenchā ?) is a Japanese animated television series created by Akiyoshi Hongo and produced by Toei Animation based on the Digimon virtual pet made by Bandai and is the first anime installment in the Digimon media franchise. The series is continued with the same characters in Digimon Adventure 02.

The planning for Digimon Adventure started in 1998 and was done in cooperation by Toei Animation, Bandai and Fuji Television.

five children from Japan are suddenly thrust into a strange dimension called the "Digital World" while they are at summer camp. During their adventure, children Matt, Sora, Izzy, Mimi and Joe discover that they are in a land where digital creatures called "Digimon" dwell. Befriending seven other Digimon, the children learn that they have the ability to help their partners digitally evolve (digivolve) into stronger, powerful forms that can combat enemies for a short amount of time. Setting off on their journey, the children start searching for a way home.

Plot
Tai returns to the Digital World to round up the DigiDestined, where he learns of another threat, Myotismon, who is preventing them from working together and activating their Crests. When Myotismon fails, he decides to enter the Real World to capture a pre-destined eighth DigiDestined child. Once the DigiDestined return to their hometown, shortly after, Tai learns that his younger sister, Kari, is the eighth child and is partnered with Gatomon, one of Myotismon's henchmen. Once Myotismon is destroyed, the DigiDestined realize that the Digital World has grown worse since their departure.