Once known as the "future of Korean badminton" and an Olympic medal hopeful, the badminton genius Taeyang returns to the courts after three years. Taejun decides to retire after he gets thrown off the team after forfeiting an important match to protect his partner from further injuring his ankle. Taeyang is back and Taejun is leaving. But the two, who just met by a chance encounter, already seem to know each other.

As Taejun joins team Yunis, Taeyang asks him to become her partner as no one else wants to.

Taeyang and Taejun become mixed doubles partners, and they're forced to play in a small tournament.

Taejun changes his mind and heads to Wando; the Park twins are on a roll with a special strategy in the competition.

Taeyang decides to switch teams, disappointing Taejun; Taejun confesses his feelings to her.

Taeyang returns to Yunis; the Park twins reaffirm their love and secretly start going out together.