Rang Rak Prang Jai

Tiwtawat, Karawat's brother was murdered in a shooting. Getusa mysteriously disappears and reappears with no memories of herself or her twin sister, Getapa, who is now missing. Suddenly becoming a suspect in the case, Getusa teams up with Karawat to investigate what really happened. However, while searching for answers and also a way to recover her memories... romance begins to rise between Karawat and Getusa.

Selected season 1, episode 1.