Bradley Cooper as Brian Gilcrest, former NASA scientist now contracting his skill to a billionaire (Bill Murray) sending a satellite into orbit from Honolulu. Brian left there 13 years ago, breaking up with Tracy (Rachel McAdams), who now has two children and an uncommunicative husband (John Krasinski). One of the kids is 12 years old, which even her little brother figures out immediately. Add to that jumble Emma Stone as Capt. Allison Ng, an uptight U.S. Air Force liaison for rakish Brian and the billionaire.