Tristan is a lonely young boy whose late father taught him how to drum old fashioned jazz music. He joins the Nightblooming Jazzmen, a group of elderly men, and plays an outdoor jazz concert with them for other senior citizens in the community. He has a grand time playing and ends up going with them to a party afterwards with some other elderly women.

At the party, Tristan, who the elderly men have newly christened Stanley so he can have a name that fits the band, devours the snacks set out and watches with delight as the old people tell stories, drink, and dance. He is surprised to find that this is a great party, and he has a lovely time.

However, things wind down when the men from the band start arguing and fighting. It seems they have been talking about breaking up the band since their drummer (who Tristan replaced) died and are having many disagreements about it. Tristan understands this might be the end, and takes his fake silver mustache off, ending the charade for him too.