What would you do if you suspected your fiancé of cheating? Gadis finds clues suggesting that her fiancé, Igor, might be unfaithful, so she decides to investigate herself in Jakarta. Misfortune strikes, forcing her to cross paths with someone from her past named Luki, and even ask for his help. The problem is, Gadis had sworn to never have anything to do with Luki again, because Luki is… her ex-FWB!