Wen Yishi orders an incubus named Qin Mo, who takes care of every household chore, making life cozy and comfortable while always maintaining just the right distance from Wen Yishi. After learning that the wrong type was delivered and that incubi come with different settings, Wen Yishi decides to keep Qin Mo while also accepting Jiang Chuan, the new companion sent by the seller. With a new presence in the house, the atmosphere quietly begins to change. Qin Mo, who has always strictly observed his boundaries, can no longer keep his heart at peace, and every movement conceals feelings he cannot put into words. Love slowly grows amid the warmth of everyday life, and Qin Mo quietly transforms into a high-level incubus with a pure and sincere heart.