"I'll chase you until we collide once again. Even it will takes years. I wont stop and will never be tired." - Luna Lucie Nathalie Vasquez, a Mathematica Club secretary who been fall in love with a boy that is opposite to her. Having relationship that leads to them in breaking up yet she could not move on and keep chasing him. When destiny made them meet, would she stop chasing him as she finally realized that he's a sun while she's a moon in the darkest side. Is there be a chance that she will win his heart once again to collide that happened years ago.