This is a story of青春 of three cousins in a family. They become adults at the same time and enter the society. They step into reality from their dreams, and touch the essence or even cruel side of life. Everyone finds that they have to face an ultra-high difficulty problem. Life is waiting for them to make a fool of themselves, but they are not convinced, angry, or屈服. They want to use their wisdom to give perfect answers, and also want to overcome the high mountains blocking their parents' will. Personality and ideals are the destinations they are heading for. Zhao Qingchu has to make a choice between "reason and emotion", and she can't have both. Does her choice of one mean that she will lose the other forever? Qian Xiaoyang pays a heavy price for pursuing "personality and freedom", but is she really wrong? After she gives up her self and chooses to take responsibility, does her ideal start to go in the opposite direction and drift further and further away?