Qin Xiaochuan, an unlucky delivery boy, unexpectedly travels back to ancient times, where he’s mistaken for a eunuch in the royal palace. Using his modern wit, he cleverly navigates the palace intrigues, earning the affection of the concubines while staying one step ahead of danger. As Qin Xiaochuan outsmarts enemies and manipulates the complex politics of the harem, he begins a secret romance with the palace maid, Xiaolian. With each twist and turn, he continues to defy expectations—can this unlikely “eunuch” survive the treacherous world of the palace, or will his secrets be exposed?