Jacey Adams lives in a family where almost everyone is famous. She has small fame. Well the fame of her small town in Kansas at least. With both of her parents famous her family is naturally wealthy. But Jacey likes to earn things for herself. She does MMA fighting to make her money. She's the best of the best. She won woman’s world championship two years in a row. Her father is very proud of her, but her mother isn't, and her twin brother Derek hates it. She also hopes to start a singing career.
Their parents divorced when they were five. They live with their mother but she's always away on business trips. They always have friends over due to that and Jacey's best friend ,Ray, lives with them. They try to see their dad as much as possible but it's hard.
One day Jacey and Derek's cousin ,Logan Henderson, invites Jacey to come stay with him for the summer while Ray is in Mexico visiting family. Excited about the opportunity she says yes. Withing a week she finds herself on a plane there to live with him and his fellow band members of Big Time Rush.
P.S. she is 21 and they only still live with their mother because she won't let them move out.