In order to fulfill a certain wish, high school student Yu Jia set out to develop a drug. Unfortunately, the medicine failed and turned him into a kitten! And he even lived in Kong Liang's home in a grand manner. As the effects of the drug gradually wear off, Yujia transforms back into a human every night, and the time lasts longer and longer. "When I completely change back, I must confess to you in my own voice!" Yujia secretly made up his mind!