Crystal Campus: an educational complex that can offer students every luxury. From Crystal Kindergarten to Crystal U, the 2-million acre territory is home to creatures of all ages, sizes and creeds.

...is what it says on the brochure, but it's Lee Jihoon's second year in Crystal U, and his favourite coffee bar has been taken over by a young man named S.Coups, who soon promises to destroy more than just Jihoon's morning cup of joe.