You won’t commonly find the genres “romantic comedy” and “sci-fi” in one film, but when you do, the result is often spectacular. Happy Accidents is one example. The film is an indie, so everything takes place in one city - we only hear about the alternate universe that our leading man Sam is from. But the script is so airtight, and the performances so convincing, you never question the veracity of it. Above all else, Happy Accidents is about trust: trust in your partner, the future you build, a bigger world, and the possibility of change. Those sound like big vague ideas, but Tomei and D'Onofrio make every inch of them feel real.