The old dog (Peng Yuchang) who came to Hainan to re-study the classes again, he met a group of "salted fish teenagers" who attracted to each other by common tastes, and met a group of unusual "weed girls". They lacked self-knowledge, but wanted to participate in the dancing miracle contest together. They passed over prejudice and misunderstanding, defeated inferiority and cowardice, released their youth, danced wantonly, burned through the scorching sun and typhoon, and covered the streets and alleys. Let's dance together this summer.