Please read all this first before you leave!! PLEASE!  

This is another love story about a girl, Jessica, and Myungsoo. One day, Jessica meets him during school, by fate. Then she recives a text from Scheduler (49 Days). Events occur, and Myungsoo stays at her house. Her parents came back from America and annouces that she has a fiancee, just when she realizes that she loves Myungsoo. She gets in a car crash and has amnesia............ Will she regain her memory?