Liam and Billy were each other first love since they are Elementary. But they are meant to fall apart because of the incident that none of them expecting. Billy choose to be away in order to get rid of the trauma and her parents passed away, she try her best to live again. And Liam became one of the famous in their school because he's always mysterious, but inside of him is a very lonely person, hes blaming herself of what exaclty happen. Until One day, Billy woke up crying, crying for seeing Liam will be soon to be in an accident, will she be able to stop the unforeseen destiny that will going to happen? Will she be able to save his first love? Makakaya niya ba? When all of her past are keep coming when she him. Regrettable Love (Completed)