On Halloween night, Thor is trapped in a deadly wedding ceremony. The bride is a monster wielding a scythe, and anyone who breaks the rules is turned into wax. But from his perspective, all the monsters appear as beautiful women. A system tells him: 'Win her heart to survive. Fail, and you die.' As he overcomes blood rituals, time loops, and death traps, he begins to charm the monster bride. He then realizes she is not the true villain. When the exit opens, she chooses to stay behind. Thor wakes up at home — only to have his new neighbor knock on the door.