When new student Kim Kibum aka Key gets enrolled into Suo Gayo University he meets Taemin and his friends Onew, Jonghyun and Minho. But they didn't expect Key to be so rude and uptight towards them. Then Jonghyun start to notice strange things about Key. Jonghyun follows him one night and discovers the new student is actually a Cat? But what happens when Jonghyun falls for Key? Can he change this Human-Cat's cold heart? Also what happens when Jonghyun and his friends lives are in danger? Can they help each other with this dangerous threat?