Happy Ending is a romantic comedy-drama that follows the story of a young writer named Yudi (Saif Ali Khan) living in Los Angeles. Yudi’s last book was published five and a half years ago which was a big hit but finds it hard to write another as he suffers from writer’s block. However, after all his money runs out, his publishers dump him to publish the work of novelist Aanchal (Ileana D’Cruz), a popular Indian author. Yudi must do something soon to maintain his fame or he might lose everything he has achieved.