Get to know the series GELBOYS better through a documentary that tells the behind-the-scenes story before the series came to be.

High schooler Fou4Mod is often invited by gel nail boy Chian to get their nails done in Siam Square, making Fou4Mod fall for him. However, he later realises he's being kept it reserve when he discovers that Chian has also been inviting half-Thai TikToker Bua to get their nails done together too. To make Chian jealous, Fou4Mod decides to use his close friend Babin to do the same.