Right after Ryu Sun-jae, a top star, ends his life, Im Sol, his top fan, somehow ends up at a time when they were in high school and tries to protect him. A fantasy romance unfolds where people who missed each other in time finally meet.
Im Sol is devastated by the sudden and tragic death of her favorite star, Ryu Sun-jae, a former swimmer turned K-pop idol. But in the midst of her anguish, she magically time slips back to 2008 – when Sun-jae is still only 19 years old! Delighted that she has a chance to help him avert his unhappy future fate, Sol makes it her mission to change the future... and maybe find love along the way.