Allison Scott (Heigl) is an up-and-coming entertainment journalist whose 24-year-old life is on the fast track. But it gets seriously derailed when a drunken one-night-stand with slacker Ben Stone (Rogen) results in an unexpected pregnancy. Faced with the prospect of going it alone or getting to know the baby’s father, Allison decides to give the lovable layabout a chance. An overgrown kid with no desire to settle down, Ben learns he has a big decision to make with his kid’s mother-to-be. Will he run or stay? As they discover more about one another, it becomes painfully obvious that they’re not the soul mates they’d hoped they might be.