Lu Mingfei is a high school student who receives an invitation from a mysterious university in a foreign land. He has a crush on a girl at his school, though, and is forced to choose between his love and future.

Lu Mingfei takes a special train to the mysterious Cassel College, and discovers the school's true purpose.

Two students of Cassel College become trapped in a mysterious dragon palace at the bottom of a dam site lake.

Aki and Ye Sheng fight to escape from the underwater palace before their air runs out, but something terrible waits for them down below...