Alexis Winston has been obsessed with famous race car driver Seth Keller ever since her older brother became best friends with him. After her parents pass away, Seth’s father becomes her legal guardian, and Seth begins referring to her as “kid sister.” But when she returns home from college a grown woman, she becomes determined to prove to him that she is definitely not a “kid,” and the spark that ignites between them is anything but sisterly. Now they must battle her brother, her guardian, and his fiancé, all under the watchful eyes of the media as they fight to hang onto each other.