A master of traditional Chinese medicine unexpectedly time-travels, becoming a notorious scoundrel. Due to his impoverished family and the need to treat his dependent grandmother, he agrees to move in and marry into his wife's family. With congenital disabilities in both legs and mindful of the male lead's past reputation, the female lead conceals her true identity, and the two have a flash marriage and live together. While the male lead works to make a living and deals with harassment from his cousin and Liu Yiyi, he enters a traditional Chinese medicine clinic to earn a living, only to face all sorts of obstructions from female villains. The female lead repeatedly steps in secretly to protect her husband, helping him slap the villains in the face. Through daily companionship and mutual protection, the male lead proactively treats his wife's leg ailments, and their relationship gradually warms up, while the female lead's hidden identity and past secrets remain unrevealed.