Jeon Yn, a brilliant forensic scientist, finds herself thrust into a future she never expected while experimenting with a time machine. In this future, she witnesses her own death, leaving her shaken to the core. She discovers her grieving husband, Jeon Jungkook, in despair. Determined to change her fate, Jeon Yn delves into the investigation of her own murder. With her forensic expertise, she unravels clues and uncovers the truth behind her demise. Along the way, she confronts her own fears and vulnerabilities while racing against time to prevent the tragic event she witnessed. As she inches closer to solving the mystery, Jeon Yn realizes that altering the future comes with its own consequences. Will she be able to outsmart fate and rewrite her destiny, or is her future already set in stone?