Jae Hwan tells Captain Ko Gwang Soo that Hahm Yon Bok was in charge of the Chimera Case 35 years ago and shares his suspicions surrounding Lee Sang Woo's death. While Jae Hwan and Eugene look into Joong Yeop and Lee Sang Woo's relationship, Joong Yeop tells an enlightening story. Meanwhile, another explosion takes place.