When Tanner Stewart learns his crazy ex is returning for a summer in Skagway, he places a personal ad, looking for someone to pose as his fiancée for the summer. Enter McKenna Cabot, a commitment-phobic college professor from Seattle caring for her aging grandmother. The promise of seasonal money is too good to pass up, so she heads north for the summer only to fall head over heels for tall, blonde, and handsome Tanner. But are their feelings strong enough to last when the season is over?