They have known each other since childhood, but due to various reasons, they are separated by an ocean. Where will their future go? When she was a child, she was a cute little baby without any relatives, and he was a shy young lady. More than ten years later, they have grown up, matured, and have their own careers. The parallel lines bend again, creating focus. She embarked on the path of a tennis career. Strict teachers and opponents made her strong, but injuries made her vulnerable. Can her tennis dream continue? He has lost his innocence and protected her from the wind and rain like an elegant gentleman. He gave up inheriting the family business for her and became an unknown tennis reporter. The pinnacle showdown in women's tennis begins, and friends and enemies go together.