Pilates instructor Amélie Didot moves to a new city with hopes of starting fresh leaving her painful divorce behind. It's not long before her new studio begins to boom with business, as does a steamy love affair with successful British media mogul, journalist Pierce Dalton. Unbeknownst to Amélie, Pierce's last relationship was unrequited love; leaving his ex-girlfriend, Fran Gibbons, raging with hostility and jealously. Fran's obsessive behavior turns deadly in her quest to win Pierce back - putting Amélie, and anyone else in her path, at risk.