After being saved by the Legendary beasts, the player, their partner, and Mawile, are brought to Reverse Mountain, which the Legendary trio believe to be closely connected to Revelation Mountain. The trio warns the player's group that they will abandon them if they become a liability.
After an arduous climb, the group reaches the mountain's peak, only to discover that the Door to Light, the gateway to the real world, is being blocked by Void Shadows. Surrounded, they fight five shadows, one of which transforms into a MegaTyranitar, and two of which turn into Mega Gengar. Even after their victory, more Void Shadows continue to fall from the sky. In a last, desperate action, Mawile shoves the player and partner in front of the door, leaving her and the beasts behind. After discovering the beasts anticipated this would happen, and were acting distant to keep the two from worrying about them, the player's partner swears they'll find a way to save them, and the two escape just as the door disappears.