As they are going to visit their former teacher, Micky, who is seriously ill, three men who were buddies back in their high school years are reunited. Moreover, they go back to the old cram school, reminiscing about their rebellious youth. In the 1990s, that cram school was known for its strict rules and the trio, who loved making trouble, had given the director a big headache until Micky arrived as a new teacher. He not only tamed the boys but became a good friend to them. Micky often talked about romantic relationships and sexuality to the students and made documentaries to speak up for the gay community. It is because of him that the students got to understand the homosexual or even themselves.

唐氏症患者小維，誤以為援交女孩小藍如同他最愛的繪本主角一樣，是從海裡出現的美人魚，對小藍產生了特殊的情愫，在因緣際會下兩個截然不同的生命有了交集，互相守護關心的溫暖故事。