Magee Sinclair keeps making costly blunders at her family's advertising agency, so when handsome Justin Kane, head of CycleMania, needs her to pose as his girlfriend for the weekend in exchange for a lucrative campaign, she has little choice but to say yes. Justin needs to cement a deal with Willoughby Bikes by impressing the Willoughbys while they bike trails together. But Magee has landed herself in major trouble - she doesn't know one end of a mountain bike from the other ...