Lina arrives at Whisperbeast Town to find her missing sister Evelyn. Beasts speak human tongues; the Ten Iron Rules are a trap—three violations mean beastification and sacrifice. She discovers beasts feed on emotions, and villainous Silver Fox lures victims to break rules. Finding Evelyn partly transformed, Lina outsmarts logical gaps in the rules, throws the beasts into chaos, and escapes with her sister. Though the transformation remains, she wins a chance to fight back.
