Tan Jingran, a top agent codenamed "Night Owl", was betrayed and on the verge of death during a mission, but was rescued by the mysterious healer Wu Xinxi. One of the two is good at killing and destroying, and the other controls life and healing. They are forced to join forces to fight against the huge organization hidden behind the scenes. When the deadly edge meets gentle redemption, can they complete the counterattack against the enemy and heal each other's scarred souls in life and death crises?