On Valentine's Day, Tom Riley plans to propose to his long-time girlfriend, Sara. He tells his group of best friends at the bar to meet him at his house for a surprise celebration in half an hour and then he grabs a bottle of champagne and heads home. But when Tom looks around his apartment, he sees that all of Sara's things have been cleared out and there is a Dear John letter waiting for him on the mantel. Sara calls to tells him that she's leaving him and that the two suitcases by the front door are the last of her things. As Sara makes her way over to pick up the suitcases, Tom has to figure out how to get her back. Only now, one by one, Toms friends from the bar start showing up thinking it's a Valentine's Day cocktail party at Tom's house. Each one has a different take on what Tom should do when Sara arrives. As more testosterone flows and more alcohol is consumed, these five men work themselves up into such a frenzy that when there is a knock on the door nobody knows what to do. Tom is forced to gather up his courage and open the front door to confront Sara--only it's not Sara--it's five drop dead gorgeous women standing in his doorway. Apparently, they were invited at the bar to join the party. And now that the women are there, it's their turn to chime in. The men and women argue, they flirt, they laugh, they hook up and they storm out, but through all this Tom discovers what he was supposed to learn on this fateful night, what love truly is, just as Sara walks through the door.