Pang is a kind-hearted girl who stands up for justice and faces life's challenges with strength. She's spent years longing to reunite with her beloved older brother, who vanished when she was a child.

Phu is a successful, serious man with everything — career, status, and family — except memories of his childhood.

When Pang starts a new job, she meets Phu and is drawn to his warm nature. She even jokingly tells him he reminds her of her long-lost brother. But as time goes on, she uncovers the truth: Phu is her brother.

Now reunited after years apart, how will they face the truth of their past — and what comes next for them?