The story follows Xia Dongqing, a college student with yin-yang eyes who unexpectedly becomes a ferryman of souls. Together with Zhao Li, a civil servant from the underworld, and Wang Xiaoya, a mysterious girl, he forms a trio that resolves the lingering obsessions of ghosts trapped in the human world, working out of Convenience Store No. 444, a place where the realms of yin and yang meet. Blending horror, warmth, and philosophical reflection, the show reveals human greed, obsession, and redemption through cases such as "The Girl in Red," "Ghost in Bed," and "The Suspended Sword," ultimately building a profound worldview around the cycle of life and death.