During the events of Chapter 4, Farfetch'd decides to take the class through this forest with the students separated into two teams. The objective is for one team to capture the flag before the other team can do so, with the two teams consisting of Pancham, Shelmet, and Deerling; and the player, their partner, and Goomy. The player's items are immediately placed in the Deposit Box and cannot be retrieved until after completing the dungeon. Instead, the team is given a set of items specifically for the lesson.
Once the player completes this dungeon, it cannot be revisited in the main game. From then on, it can only be revisited through Pelipper Island.