He is just a courier, but he awakens the ability to "predict five seconds" on a rainy night. Every prediction is like dancing on the tip of a knife - seeing the future and being stared at by the future. The black market organization "Lighthouse", the Special Security Bureau, and unknown super rules pushed him to the center of the city's undercurrent. Five seconds is not long, but it is enough to change his life; the price is high, but it forces him to grow. When he discovers that foreseeing is not the only future, the real battlefield has just begun.