Wanvisa (Kim) pisses off a young mafia (Ananda), so he tries to get back at her. However, Wanvisa won't take the bullying. She gets back at him by putting him in embarrassing situations. They start exchanging blows, teasing and pranking each other. While they continue bickering, she saves his life many times coincidentally. Later she finds out that he is Parop, the heir of a rich household. He has been having bad luck and has had many life threatening accidents. A fortune teller tells his parent that he is in extreme bad luck; it may cost his life. The only way out is to find a girl who was born on a full moon Monday. This girl will be his lucky charm and will save his life. Upon finding out that Wanvisa was born on a full moon Monday, his parents try to wed them. However, the young tiger is too heavy-lipped to accept his feelings for her. As cupid works its way, Wanvisa starts to notice that things didn't happen accidentally, and the person behind the assassination attempts is somebody close to them.