At the Delaney family get together in the summer of 1973, while adults drank and socialized, kids played and chased one another in and out of the house, and Uncle Mel snapped pictures everywhere, teenage cousins Tom and Terry were hanging out up in the attic, talking about girls and stuff while listening to a David Bowie album and sniffing model airplane glue. Their younger cousin Diane finds them, and really blows their minds.