Audrey (Mila Kunis) has just turned 30 years old and is deeply unhappy with the way her life has turned out, particularly after her boyfriend Drew (Justin Theroux) dumps her via a text on her birthday. Soon after, she is informed that her ex is actually a CIA agent who is being targeted by a team of deadly assassins, who are now after Audrey as well.

In an effort to save innocent people from an impending attack, Audrey ends up part of an undercover mission in Europe along with her best friend Morgan (Kate McKinnon) to deliver a package demanded by the terrorists. Along the way, the two are joined by a British agent (Sam Heughan) who helps them devise a plan to save the world.