Overdose is basically a story about a girl Soo Ah(just a name you can imagine her as you) who fall in love at first sight with baekhyun. At first soo ah try to search for her prince charming who she encounter 2 years back and it looks like his prince charming is not an ordinary guy. He is one of the member of the hottest idol group exo. will Soo Ah love reach Baekhyun? Will their love find happiness with all the pressure from other exo fans and sm company?