The Heartbeats Are at the Same Frequency. Mr. Fu, You Have Lost Your Vest.

Liu Ruyan discovered that her brother Liu Yunchu suddenly lost contact. All clues pointed to Fu Yanci, the person in charge of Xingyao's risk control. Liu Ruyan found a doll with Fu Yanci's photo in his brother's room. She soon discovered that the doll was not a toy, but a "neuro-tactile feedback terminal" that could generate pain, temperature, and movement feedback with Fu Yanci. Liu Ruyan initially believed that Fu Yanci had harmed his brother and used a doll to trick him to test him. After Fu Yanci came to visit, the two were forced to cooperate to find Liu Yunchu amid mutual distrust.