After being released from prison, Woo-sol, along with his fellow prisoners Won-jun, Seong-yong, and Sang-hyeop, live their lives with the stigma of being ex-convicts. Woo-sol and Sang-hyeop devote themselves to exercise, Seong-yong runs a food truck, and Won-jun begins studying for a new life. However, the leader of an organized crime group, Hyun-woo Yong, appears before them like a storm and begins to shake up their ordinary daily lives once again. (thetvdb.com)