Su Wantang, a drama-loving money fanatic, is sold into a prince's manor by her greedy relatives to be buried alive alongside the supposedly dead Prince Regent, Fu Jinghan. Believing she is doomed, she unexpectedly activates a survival system and wakes Fu Jinghan, who is only pretending to be dead, while munching on sunflower seeds inside the coffin. To stay alive and make money, Su Wantang quickly forms an alliance with him. Using her wit, she resolves a court poisoning crisis, deals with unscrupulous relatives, and thwarts assassins. Meanwhile, the cold-faced, calculating Fu Jinghan gradually falls for her. In the end, he offers her both the wealth of the realm and his sincere heart. Through hilarious bickering, the two join forces to turn their fortunes around, embarking on a sweet romance where their pretend act becomes real and both love and career flourish.