Serial murder at Handam University. A mysterious murder occurs in Smart Earth, and Joon-hyuk enters.

Woo-jin learns that the woman and he go to the same school. Joon-hyuk often collides with Ho-soo.

Woo-jin suspects Jung-yeon as the murder suspect. Ho-soo blocks Joon-hyuk’s plan in General Earth.

Spotting a bug resembling the one from a corpse, Woo-jin doubts her. Joon-hyuk also has no memories.

Seeing the alien, Star, she is confused about herself. Joon-hyuk chases Blue Bird to find his twin.

Woo-jin misses Beom-gyun and searches for the ambulance. Joon-hyuk finds Woo-jin with Blue Bird.