Knight & Day is about a rogue agent (Tom Cruise) that hides a powerful battery in a normal woman named June's (Cameron Diaz) carry on case at an airport. He thought that would be it and he'd never see her again, but he finds himself having to protect her from the people he used to work with.
The movie is just fun and it may be silly that Cruise and Diaz talk casually during shoot-outs but that's one of the things I enjoyed about the movie. The movie isn't meant to be taken seriously, just sit back and enjoy all the entertaining non-sense. Out of a so far lackluster summer season, Knight & Day is one of the better summer movies. Don't listen to the idiots on At the Movies, this is a fun flick and I highly doubt the Killers is a better movie like they said!