Leon, a young man in his mid-twenties, is facing a terminal illness. In response, he creates a groundbreaking technology that digitizes his consciousness, granting him eternal life. However, this invention poses a grave threat to humanity’s future. To prevent this catastrophe, a freedom fighter named Aqua journeys back in time with the mission to eliminate Leon. As their paths cross, they unexpectedly fall in love, leading to a series of tumultuous events.