Qin Yumin met Su Wanyue when he was young and frivolous. He thought he had met the girl he would stay with for the rest of his life, and he thought he could go all the way to marriage, but he failed to do so. A year after they broke up, he accidentally ended up with his sister Qi Qi. , But Qi Qi couldn't accept Qin Yumin who had bipolar disorder, so Qin Yumin became a human again. Frustrated, he committed suicide after protecting his favorite family, but his ashes were taken to the marriage hall by his brother...