The former "street gangster" Li Qingrang (Huang Xuan) is released from prison and re-employed in a series of obstacles, and his chance encounter with an old acquaintance Wang Daji (Dong Jewel), so that he carries a conspiracy to join the "Home for the Sick", which hides what unknown transactions? And what kind of thrilling story will he collide with the hot boss of Lai Fu Hotel (Liu Yan)? As conspiracies and conflicts continue to emerge, on the one hand there are patients who are more like family than those who spend time together, and on the other hand there is an old acquaintance who throws money-making olive branches, what should he do, and whether the "Home for the Sick" Lai Fu Hotel can be saved from danger.

Xiaoma, a young woman who has recently moved to Beijing, finds an apartment in an old courtyard apartment complex owned by Grandma, an elderly woman. Xiaoma and Grandma’s relationship almost immediately becomes strained. After trying to tidy up the courtyard, Grandma insists that Xiaoma turn over her share of the profits. Tightfisted, the elderly landlady resists even allowing Xiaoma to install a telephone. At the same time the older woman becomes increasingly interested in Xiaoma’s personal (and romantic) life. Grandma, for example, tries to pass off her grandson to the younger woman. Annoyed, Xiaoma nevertheless is flattered at the older woman’s concern. Over the course of four seasons, Xiaoma begins to learn from her landlady of the old world that the modern city of Beijing has left behind, while Grandma begins to enjoy the youth and vitality of her tenant. The two women become closer and eventually develop a deep friendship.