One day five years ago, you were going about your regular life, but one day, it seemed as if you had awoken in a different universe because all the Pokémon were anthropomorphic and had their own lives, instead of having trainers.

After getting back to your apartment after a day at work, you stop to talk to your neighbour outside, as you're speaking with them, your neighbour from another floor, Millie, comes up next to you and interrupts your conversation.