Wang Hui Yin is part of the close knitted group that call themselves F4. Daoming Si, Huaze Lei, Yan Xi Men, and Feng Mei Zuo all care for the younger girl deeply. Her weakened heart caused them to separate for a while. But now she's back, and Shancai, too, makes an appearance. Hui Yin goes through a confusing journey filled with wonders. She wonders if her delicate heart deserved his love. She wonders if he would even want to have her delicate heart. She wonders if her delicate heart can cling onto him before it's too late.