When those ants are gnawing at your youth, all those memories have been wiped out bit by bit by them. Life is the most gorgeous show, and youth always seems so fleeting. Ringo is a star, a big star. Yao Jing, his childhood sweetheart for seven years, is a proud but low-self-esteem girl. She has friends with different personalities around her, such as Zhou Ran who has entered the ranks of a mistress, Yun Liulian who is "on a blind date to find her father", and so on. They originally lived a petty bourgeoisie life, but life always laughs at what you have, making these fragile humans kill each other. These are the traces that should be left in youth, those friendships, love, and swirling disasters. It is these that constitute the real traces of youth.