Lin Xiaotang, a street stall fan who grew up in an orphanage, met Gu Zhaoming, a genius game developer who hides his identity (heir to the Gu Group), because he rented out a second bedroom. The two started from a misunderstanding between "landlord and tenant" and gradually fell into a sweet daily life - Gu Zhaoming used game scenes to confess his love and helped Lin Xiaotang expand his sugar painting business, and Lin Xiaotang used his foodie attributes to relieve Gu Zhaoming's family pressure. However, villains such as the Gu family's mean elder (mother), hypocritical best friend (Lin Xiaotang's orphanage friend), and heir vying (younger brother Gu Zhaoyuan) are constantly provoking. The two have experienced scandals, misunderstandings about long-distance relationships, group crises and other abuses. Lin Xiaotang grew up from a "love and money obsessed" to an independent woman and used the income from the sugar painting shop to help Gu Zhaoming solve the group's crisis; Gu Zhaoming learned from the "genius who evaded responsibility" to face the family directly and gave up his position as heir to run the sugar painting chain with Lin Xiaotang. In the end, the two reunited at a seaside wedding, and exchanged the past of "a knife hidden in sugar" for the happiness of "a knife hidden in a sheath".