The film, set in 1995, was told through the memories of Billy, a former vocational student who turned to be a single dad with Am his teenage daughter.
Though this father-daughter relationship is not very healthy, when Am gets injured from a vocational school gangs fight, Billy reminisces his own and his friends' pasts.
The film based on actual events in Thai society about the issue of quarrels among teenage vocational students which injures unrelated persons as well.
[2] 4 Kings develops itself from a short film in same title released on social media in mid-2015 about a battle between vocational students until it became very well known.
1 at the box office on opening weekend, with a total income of ฿50 million after only 4 days of showing, beating Thai-South Korean found footage mockumentary horror film The Medium from the top spot.
Separately, Thai Civilized Party leader Mongkolkit Suksintharanon on 14 December invited vocational students to join him at Esplanade Cineplex Ngamwongwan-Khae Rai to watch the film.