Atlanta Robbin’ Season — tells one large story with characters from the show not necessarily all together as events unfold.
Based on that description, it sounds like a chunk of Atlanta Season 2 — a.k.a.
For the record, other shows have obviously used that form of storytelling in the past, but Donald Glover is apparently quite attached to the way Paul Dini and the Tiny Toon Adventures writing team executed the concept.
For those that don’t have a Hulu account to watch the entirety of Tiny Toon Adventures: How I Spent My Summer Vacation — which was recently added when the Animaniacs reboot was announced — the film features the characters of the show all having their own summer adventure.