Evading the angry mob, the gang discover that the source of the town's water is being poisoned by the man from earlier, who is revealed to be one of the Devil King's army leaders, Hans the Deadly Poison Slime. Learning that Hans had eaten the hot springs' overseer, violating the non-interference agreement she had made with the Devil King's army upon leaving, Wiz steps in to face Hans while Aqua attempts to purify the source, receiving help from the cultists after they realize the truth...