Digimon Adventure: S01 E19 The Fist of The Beast King Roars

"The adventure continues to a new world."

Thanks to Omegamon’s reappearance, the Mega Digimon Nidhoggmon, was finally defeated. However, Sora and the others disappeared after being swallowed by a storm. Taichi and Yamato, who are left behind in the Digital World sneak into Valvemon.