Badminton genius Tae-yang returns to the courts after 3 years, while Tae-joon decides to retire.

As Tae-joon joins team Yunis, Tae-yang asks him to become her partner as no one else wants to.

Tae-yang and Tae-joon become mixed doubles partners, and they're forced to play in a small tournament.

Tae-joon changes his mind and heads to Wando. The Park twins are on a roll with a special strategy.

Tae-yang decides to switch teams, disappointing Tae-joon. Tae-joon confesses his feelings to her.

Tae-yang returns to Yunis. The Park twins reaffirm their love and secretly start going out together.

Tae-yang didn't congratulate Tae-joon on being chosen. They head to the sea, and Tae-joon hears a secret.

Tae-joon struggles to play after hearing Tae-yang's confession. He can't par up to Jung-hwan's skills.

Tae-joon leads Jung-hwan and the team to victory. Tae-joon also finds he is growing fonder of Tae-yang.

Tae-yang is stuck in a slump, so she trains her body harder. Tae-joon keeps the secrets to himself.

Tae-yang decides to put her career on the line and confess, but Tae-joon reveals his secret to Tae-yang.

Tae-yang thinks it is for the best that she leave for Tae-joon and the team. She decides to break up with Tae-joon.

Things get awkward between Tae-yang and Tae-joon. Tae-yang hopes to remain friends, but Tae-joon gives her the cold shoulder.

Although they’ve broken up, Tae-yang worries over Tae-joon’s physical therapy. Meanwhile, a rumor that the two are still going out spreads.

Taeyang wants to forfeit the final match of the tournament in order to save Taejun from further injuring his knee, but Taejun is determined to play.