A 21st-century girl, Xu Xiaoman, soul-travels back to the 1980s. As soon as she marries into the Zhou family, she becomes a widowed, foolish daughter-in-law. To protect herself, she plays the fool to get by, having to deal with her mother-in-law while also fighting her rival in love, Liu Qing. Liu Qing falsely claims to have saved people from a flood to demand a betrothal gift, but actually intends to frame Zhou Chengzheng with someone else's unborn child in her belly. Xu Xiaoman gathers physical evidence to expose Liu Qing, and relies on her pig-bristle craft to help fellow villagers bring in goods and win the people's hearts. Zhou Chengwen, her husband who has been missing for three years, returns with amnesia and only asks for a divorce. Xu Xiaoman readily signs her name and goes to the ancestral hall to prove her innocence. An old boatman comes forward to testify that the one who saved people in the flood back then was Xu Xiaoman. With the truth settled, Zhou Chengzheng sincerely asks to marry her, and she casts off her disguise and readily agrees.