Many movies take an adulterated look at youth.
But it should be big with all ages. He's unwittingly placed in touch with his past, starting when a red biplane begins buzzing about whenever he's out. That plane approximates one Russ had as a youngster. It's a phenomenon, from the director of the film by the same name. Russ is displeased to have his orderly, relationship-free life disrupted by this pudgy interloper, a reminder of the failures of his youth.