Miss Happy

Miss Happy stars Pancake Khemanit as a happy-go-lucky woman named Peesuk, who often annoys her best friend Golfie. Unfortunately, Peesuk is diagnosed with having an irregular heartbeat that will likely cause her death within a month. In an effort to survive, Peesuk looks up information and finds a YouTube video made by Tul, played by Jitpanu Klomkaew. Tul's video claims that Peesuk can stay alive if she dances in the way shown in the video.
(Source: IMDb)