Jun Chi is a high school senior whose grades are falling. When his homeroom teacher asks him to bring his parents, Jun Chi disguises his girlfriend, So Ra, as his mother and successfully pulls off the ruse. Jun Chi's friend, Byung Ho, is forced to work on a construction site and misses school because his family has fallen on hard times. Jun Chi goes to see Byung Ho and convinces him to come back to school. So Ra gets sick and goes to the hospital. When they find out that So Ra only has a little time left, Jun Chi and So Ra leave on a trip together to comfort each other.