Circle : Two Worlds Connected

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.

Woo-jin is confused after seeing his dad in the photo. They doubt him as the president of Human B.

Finding sources forced by Yong-woo, Woo-jin learns his twin's location. Joon-hyuk receives a text.

At the old house, she and Woo-jin find unexpected data. Blue Bird and Joon-hyuk are wanted urgently.

A person tries to kidnap Beom-gyun and destroy evidence. They infiltrate Human B and face somebody.

Everything was Dong-geon’s scheme. He wants Joon-hyuk, Jung-yeon, and Woo-jin as terror suspects.

Woo-jin and Joon-hyuk want to destroy Human B. Human B is in chaos, and the three are in danger.