One day Bok-joo, star of the weightlifting club at her university, runs into Joon-hyung, a swimmer who weakens under pressure.

Joon-hyung saves Bok-joo when she falls into the pool, and they realise that they were friends in childhood. Joon-hyung makes a comment about Bok-joo's weight.

Bok-joo visits Jae-yi's weight loss clinic but is concerned about the price. Then she hears about a mountain climbing contest with a big prize.

Bok-joo pays the clinic fees and is given an examination, but warned not to overdo it. Bok-joo thanks Jae-yi for lending her his umbrella.

Joon-hyung sees Bok-joo when he visits Jae-yi at the clinic. Bok-joo hides the truth from Jae-yi and says they are just old classmates.

Bok-joo is delighted to get a ride home from Jae-yi after the concert. While Joon-hyung is in counselling he remembers an incident from his childhood.