Yuhua accidentally transmigrates into a redemption novel and is bound by a system to win over the gloomy male lead, Gu Huaizhi. She talks a lazy game but keeps crashing into his world—doing his laundry, painting, moving in together, misunderstandings and testing—until the silent, self-trapped man slowly begins to respond. She thinks she's only completing a mission, yet without realizing it, she has become the one light he never dared hope for and desperately treasures.