Could it be the whim of a god? One day, animals gain the ability to transform into humans. Yeon-woo, a rabbit once considered the weakest of the animals, becomes human and seeks to rise in social status. However, even in the human world, he remains trapped in the lowest social class. Growing discontent with his status and hierarchy, Yeon-woo hears rumors of corruption among the wolves who reign supreme. He hangs posters throughout the village, only to be discovered by his sworn wolf brothers, Wol-young and Do-hwa. Yeon-woo desperately pleads for a chance, but Wol-young grants him one, in exchange for a visit to her room at night...