One idea could be a story about a trainer who discovers a rare and powerful Pokemon in Pokemon Home that has been lost in time. They then have to protect it from various villains who want to use its power for evil.
A story could revolve around a young trainer who accidentally transfers a glitch Pokemon into Pokemon Home. This glitch Pokemon has unique abilities that no one has ever seen before. The trainer has to figure out how to take care of it and also deal with the Pokemon Home admins who are worried about the potential disruptions this glitch Pokemon could cause.