Weightlifting Fairy Kim Bok-joo
Weightlifting Fairy Kim Bok-joo episode 7 could mark the beginning of a rivalry between Joon-hyung and Shi-ho.Facebook/MBC

Weightlifting Fairy Kim Bok-joo will return with another interesting episode next Wednesday, December 7, at 10 pm KST. Episode 7 will focus on Song Shi-ho's betrayal and its consequences on her roommates' life.

In episode 6, the Korean period drama featured the bonding between Jung Joon-hyung and his childhood friend. Unlike other female students of Haneol Sport University, the weightlifter was never interested in spending time with the swimmer. But she decided to help him out to overcome his panic disorder after knowing about it from her obesity doctor Jung Jae-yi.

Things turned for the worst after the rhythmic gymnast became jealous of her former lover's friendship with her roommate. Instead of fixing things between the two, she made it more complicated by handing over Kim Bok-joo's diet chart to her coach Choi Sung-eun.

Weightlifting Fairy Kim Bok-joo episode 7 will pick up right from where it left the lead characters and focus on the consequences of Song Shi-ho's betrayal. The trailer shows Kim Chang-gul confronting his daughter and asking her why she lied to him.

The promo also shows Jang Young-nam's character confronting the female lead and asking her if she sees food as poison. Later on, Lee Sung-kyung's character is seen apologizing to her coach and friends for hiding things from them. She even decides to reveal her real identity to the obesity doctor on his birthday by sending him a message.

Since Joon-hyung saw Shi-ho furiously going inside the weightlifting academy, he might confront her for creating troubles in Bok-joo's life. So the rivalry between the former couple could begin with the seventh episode.

Watch the trailer for Weightlifting Fairy Kim Bok-joo episode 7 below: