HOME AWAY FROM HOME
(Episode 21)

Tai and Koromon are pulled through the rift and find themselves back on Earth.  Tai goes home and visits his little sister, Kari, who seems to be aware of the DigiWorld. 

Tai discovers that evil Digimon are taking advantage of the rift and creating chaos on Earth.  Koromon digivolves to Agumon in order to battle the dreaded Ogremon and then returns to the DigiWorld to help his friends. 

Although Tai wishes he could stay with Kari, he follows Agumon back, too.