The protagonist, Kai, is an art director of an advertising company. She is admired by her juniors and is very good at making work go smoothly and seamlessly. However, when it comes to love, she always dares not cross "that line" and often drinks alone and cries. "I want to fall in love..." With this thought, Kai meets Sho, a time patrol member from the future, and receives a special order to arrest illegal time travelers with him. Because there is a risk of changing history, illegal time travel is a felony. Faced with the "lovers born for love" from the future who travel through time and space because of love even if it is a felony, Kai is moved by them. What is waiting for Kai is the "super development of love" with Sho! ? In fact, Kai and Sho once fell in love beyond time and space and became lovers! ? Kai always postponed love for other things, and this time she crossed time just to fight for the realization of love in this life.