After Alice Holbrook (Jennifer Love Hewitt), a happily married English woman living in Bristol, receives an anonymous Valentine's Day card with radish seeds in it, she automatically assumes the card is from her supposedly loving lawyer husband, Sam (Jimi Mistry), and that he is trying to be romantic. In return, Alice decides to write an anonymous reply to her husband to keep the gimmick going, but only accidentally sends the card after a drunken night with her sister. What Alice does not realise, however, is that her husband did, in fact, not send her the original Valentine's Day card; her husband's best friend and lawyer partner, Archie (Dougray Scott), did.