Digimon Adventure

Synopsis

Still no match for VenomMyotismon alone, WarGreymon and MetalGarurumon are joined by Angewomon and the other DigiDestined Digimon in their champion forms. However, their combined attacks only reveal an entity within VenomMyotismon's stomach that Tai figures out is their enemy's weakpoint. With the Crests holding down VenomMyotismon, WarGreymon tosses the TV station ball into the hole to keep it open so he and MetalGarurumon can concentrate their attacks to obliterate VenomMyotismon. With his destruction, the fog clears revealing the Digital World in the sky. When a plane touches it, the wing freezes and breaks off but Garudamon saves it. The Digidestined realize that years have passed in the Digital World since their departure and realize something must've happened. Knowing they're the Digital World's only chance, the kids decide to return there with Kari and Salamon, Gatomon's rookie form, joining them. Their parents, after some reluctance, give their blessings and the kids use their Digivices to open a portal to the Digital World and return through it.

(Source: Wikipedia)