A simple Valentine's Day card leads a couple to ponder the strength of their love in this romantic comedy starring Jennifer Love Hewitt, Dougray Scott, and Jim Mistry. When Alice (Hewitt) receives a Valentine's Day card from her husband Sam (Mistry)'s best friend, Archie (Scott) -- who harbors a lingering crush on his lifelong pal's beautiful wife -- she mistakenly assumes it to be from her husband, and playfully responds with an anonymous card of her own. Suspicions rise however, when Sam hides the anonymous card from his wife and she begins to suspect that he may have a secret mistress. Could a simple prank have the power to unravel years of marital bliss and shake the foundation of Alice and Sam's loving relationship, or will Sam's lovelorn pal Archie be able to help his old friend save his marriage despite his growing feelings for Alice?