The party discovers the mirror is actually a gate linking the sewers of Water Town with the green moon, allowing goblins to enter. As Lizard Priest works to remove the mirror from the wall, the rest of the party repel the goblin counterattack led by the Goblin Champion. Once the mirror is loose, Goblin Slayer has the party take shelter under it while Dwarf Shaman collapses the roof. All of the goblins are crushed, but the mirror protects the party, leaving them unscathed. The party encases the mirror in cement and sinks it in the river, as they can't guarantee other goblins won't learn to use it...