This a Drama series about a group of co-workers in their twenties who started their job at a big multinational company. This is a story about their everyday life, about their journey each day at the office.

When the queen-to-be of medieval Korea is badly wounded, Captain Choi Young uses a wormhole to "heaven," which is actually 21st-century South Korea, to bring back the spoiled Dr. Yoo Eun-Soo who becomes a pawn in a game of human chess.

A male student's body is found at school. Authorities assume that the student killed himself in a fall. Other students at the school hold a trial to uncover the truth behind his death.