The story begins with Jen Kornfeldt (Heigl), who meets the charming Spencer Aimes (Kutcher) while on vacation in Nice, France. Unbeknownst to Jen, Spencer is a high-level government assassin. After falling in love, Spencer decides to quit the spy life to marry Jen, and they settle into a quiet suburban life.

Ashton Kutcher, Katherine Heigl, Tom Selleck, and Catherine O'Hara Release Date: June 4, 2010 1. Plot Summary

Three years into their marriage, Spencer’s past catches up with him. He discovers a $20 million bounty has been placed on his head, and nearly everyone in their lives—neighbors, coworkers, and even friends—reveals themselves to be contract killers. The film follows the couple as they dodge bullets while Jen simultaneously grapples with the shock of her husband's secret past. Killers (2010) - IMDb