The story revolves around an ordinary 17 years old Melissa, a petite girl with an energetic personality. She has a crush on a guy at her class, that she has for almost 3 years, unfortunately on the 3rd of April before going on her final class of the day in the computer lab, a huge explosion happens right before her eyes killing anyone inside the lab. Everyone in her class was safe because most of them were distracted by melissa's friend from the other class Aoi, everyone was safe except Robert, Melissa's crush. Distress by the loss of her long love, one night in her dream she saw a person, that wears her a watch, and said something about "Save him", when she woke up in the morning, to her suprise she was back before the huge explosion happen. Can she save her crush? and prevent the explosion? Stay tune.