主要讲述了用生命来维护世间阴阳平衡的阳冥司端木熙（贾征宇饰）与遭遇车祸死去的鬼魂杨敬华（孟子荻饰）签订影灵的终身契约，性格截然不同的两人啼笑皆非的相处与携手战斗的故事。端木熙的未婚妻秦诗瑶（陈姝君）的介入和反派司徒律（虞祎杰饰）的挑衅，也令故事增色不少。
PARK Duk-joon is an old man living by himself. Every night, he suffers from insomnia attacks brought on by disturbing flashes from his dark past. He tries in vain to pray and find solace in religion. His only friend is Mrs. LEE, a church elder who gives him weekly church bulletins. Mrs. LEE invites him to a testimonial at her church. Duk-joon is surprised to see the face of the speaker. He is LIM Gwang-han, Duk-joon’s former superior officer from his days as a police interrogator in the 80s. They meet for the first time in years, Gwang-han brings up Duk-joon’s painful past again.
