Hikari and the Moving Forest

Hikari and the Moving Forest (ヒカリと動く森, Hikari to Ugoku Mori) is the forty-fourth episode of Digimon Adventure:.

Summary
After travelling through many fields, the Chosen Ones finally come upon a forest. However, they find that the forest itself makes up a Digimon’s body. Hikari and the Chosen Ones help this Digimon fight an old nemesis.