After five (or six) years old vanilla-wedded bliss, ordinary suburbanites John and Jane Smith are stuck in a huge rut. Unbeknownst to one another, they are both coolly lethal, highly-paid assassins working for rival organisations. Once they discover they are each other's next target, their secret lives collide in a spicy, explosive mix of wicked comedy, pent-up passion, nonstop action and hightech weaponry.