The drama tells a fantasy romantic love story between an 18-year-old boy and his 31-year-old childhood sweetheart. The childhood sweethearts separated in high school for special reasons. The heroine always thought that the hero had died, but 13 years later, the heroine met the hero again. The hero was still the 18-year-old, and the heroine was 31 years old at this time, but the two still had each other in their hearts, so a special love began.