"the game starts with a cutscene of lillie running through aether base with cosmog. she gets cornered, then escapes by cosmog teleporting them. you arrive, save cosmog on a bridge. over the course of the game you find out that cosmog is a key to evil teams plot and so needs to be kept safe, you raid a team skull base and while you do that plumeria steals lillie/cosmog. Gladion shows up and says theyre at aether base, you and hau go with him. There you find out that cosmog is actually an ultra beast, capable of opening the utlra wormhole, and team skull is working with team aether because lusamine wants to open the ultra wormhole and release the ultra beasts because she loves them even though itll kill cosmog. lillie is lusamine's daughter and gladion's brother, and she stole cosmog to protect it. you manage to stop lusamine in time for cosmog to not die, but it evolves and isnt moving, and lusamine/guzma escape through the ultra wormhole before it closes. you and lillie go to the fourth island, get sun/moon flutes and play them at the altar of the moone to "awaken" cosmog, who transforms into lunala and takes you to the ultra wormhole to ultra space, where I am about to confront lusamine"