Dave picks up coffee every morning at the train station on his way to work. He can't help but notice when the man in front of him is given a plum-colored cup holder, as it goes perfectly with his own tie. There are other things he can't help but notice, like how hot and "Mr. Plum and " is.When Mr. Plum hands over a cup of coffee, exactly how Dave likes it, the morning he's late getting to the station, it's the start of a beautiful friendship. Or is it?