Season 1 of Gossip Girl: Thailand premiered on July 16, 2015.

Serena Wijitranukul returns to Bangkok following her mysterious disappearance: everyone is extremely shocked including her best friend, Blair Waranon. Blair soon finds out that Serena had slept with her boyfriend, Nate Achirawat, the night of her disappearance. Meanwhile, Serena begins dating Dan Chanaseri while Nate struggles with his feelings for Blair. The two try to salvage what's left of their relationship, only leaving Blair to lose her virginity to Nate's best friend, Jak Benjakij, instead. In the meantime, Jenny Chanaseri constantly tries to make it in this upscale world by following around Blair and her friends.