On his way to school, college student Baek Young-ha is unexpectedly caught up in a 'dungeon'. After encountering a giant monster, he awakens as a hunter. However, the ability he gains is 'affection measurement', which allows him to check the affection level others have for him. Can Baek Young-ha navigate the dungeon successfully with this absurd ability? With his sudden emergence attracting the attention of numerous hunters, what does the future hold for Baek Young-ha?