Ke Miantang transmigrates into a vicious supporting female character in a book, taking on a system task to act as the male lead's girlfriend for half a year to soothe him, waiting for the original female lead to appear so she can take the money and exit. Rong She, the heir of Nebula Group, looks gentle on the outside but is exceptionally stubborn when it comes to feelings. Ke Miantang acts step-by-step with caution, but the script completely goes off track. The man who should have fallen head over heels for the original book's female lead somehow falls for her instead. Just as the task is about to expire and the reward is in hand, the system suddenly malfunctions, and the task is directly rewritten. She is shocked to realize that Rong She had long seen through the secret of transmigrating into the book, plotting step-by-step solely to keep her by his side.