Seung Hui is a pole vault athlete at Daehan College of Physical Education. She had amazing records in the past, but she's now suffering from a slump. She was having a hard time until someone came to Korea to help her. It's Kang Ji Na, a track-and-field star who was famous worldwide. Kang Ji Na becomes Seung Hui's coach, and they have their special 50-day training together.