Kang Dae-Ho, a naughty boy used to be an academic failure, could not be more different than Ko Eun-Bi, a prim girl and model student. On one stormy day, lightning strikes both of them and knocks them unconscious.
Kim Hyun-pil, an orphan, gets caught for picking pockets. At the police station, he causes trouble for the police. Detective Koh, takes sympathy on Hyun-pil's situation and takes him home to raise him as his own. Hyun-pil grows into a fine young man under the Koh's care, and despite resentment and scorn of Koh's son Mook, Hyun-pil is nurtured by love from Yeon-ji, Mook's sister. But even as adults, the discord between Mook and himself forces Hyun-pil to leave their home...
Hye-joo and Eun-kyung vie for 1st place in school. Tae-ho, who's tormented by his parents who incessantly nag about grades, has a crush on Hye-joo. The two girls begin an earnest struggle for the top score as they prepare for the final exams. But when Eun-kyung sees Hye-joo, who's been too sick to study, cheat, she becomes indignant.
