In a car accident on a rainy night, a mysterious white light caused the ordinary librarian Tong Jiaqian and the cold genius CEO Gu Linchuan to switch bodies. Tong Jiaqian was forced to play the role of the helmsman of a business empire, facing the covetous family feud and unfamiliar territory; Gu Linchuan was trapped in daily necessities, and experienced the ordinary warmth he had never experienced before. At the same time, Tong Jiaqian is bound to a unique [emotional devouring system], which can absorb the strong emotions of others and transform them into power.
From the initial panic and disguise, to working together to deal with the crisis and exploring the mystery of their lives, the two gradually broke down their guard in the process of playing each other. When Tong Jiaqian discovers the forgotten past between her adoptive mother and Gu Linchuan's father, and when Gu Linchuan's cousin is willing to collude with gangs to seize power, they must use the power of the system to find a balance between emotion and reason, conspiracy and protection. This is a counterattack journey about identity, growth and true love. They swallow up emotions, but heal each other's lonely souls.