When Faith (Marisa Tomei) was 11, a Ouija board and a fortune teller said her true love's name is "Damon Bradley."
Adult Faith believes in destiny and, after getting engaged to someone else, catches up with Damon, who is single but a boring executive type.
Peter (Robert Downey Jr.) met Faith in Italy while she and her sister-in-law Kate (Bonnie Hunt) were looking for Damon Bradley. Peter told her his name was Damon Bradley because he fell in love with her at first sight and wanted her to give him a chance.
Turns out that Faith's brother Larry (Fisher Stevens) had made the board spell out his friend's name and paid off the fortune teller to give the same name to Faith all those years ago.