Review Detail of InstaMoist in ARCANE: The Dark Misfit

Honestly, I just like playing League of Legends and Legends of Runeterra and don't know the history of the world or the story behind the characters. Because there are only 4 chapters, there is not much to comment on, but I want to ask, is he still on earth now? Because I'm a little confused about what's going on. Because at first, I thought he was in Zaun, and all the assassination plots and events made it plausible that he wasn't on earth anymore. Then he met a grandma who could use qi? Whatever it is, maybe my brain is the problem because I haven't slept all night.