Retired weightlifter Lee Ji-bong (Lee Beom-soo) reluctantly accepts a coaching position at a provincial girls' middle school. Ji-bong eventually accepts the group of enthusiastic yet clueless teenage girls to pass on the painful skills of the unpopular sport. Inspired by a true story, the film shows how the ill-equipped team members champion the national sports festival and also transform one another's lives.

(Source: http://www.hancinema.net)