This is an elegy dedicated to youth. When the years fade away, when the dreams are no longer vivid, and finally only memories are left, along with the track of the years, it starts from the beginning and ends at the end... Ye Cong, a lucky person who has reappeared in life, a former gold-medal field worker of a mysterious organization, after ending his first life in a killing, finally discovers the true meaning of life: it is family affection, friendship, and especially the youthful and pure beauty. Love. So, he cared for this hard-won brand new life with all his body and mind. What about the divergence of fate? Reverse it! What about threats? Exterminate! Ye Cong swears: Whoever wants to end my life, I will end his life!