All of these are based on the idea that I'm a trainer and you're 1 or more Pokemon. Species and gender don't matter, I'm open minded.

1) Snowed in: While out exploring, I got caught in a snowstorm and had to take shelter in a cave. My Pokemon (or team) come out of their balls to cuddle for warmth and we end up getting frisky.

2) Gotta fuck'em all!: I'm on an adventure looking for cute or sexy wild Pokemon that my team can defeat and subdue for me to have sex with. My team could stand by, or they could join in.

3) Pokemon village: I stumble across a secret village of talking Pokemon, who either bribe me with sex to keep the secret, or force themselves on me to make me keep the secret.

4) Alpha Attack: I get attacked by an aggressive wild Pokemon or group of them PLA style that are looking for a target to mate with.

5) High Stakes Trainer Battle: I get challenged by a trainer on the condition that the loser has to submit to the winner (and possibly their Pokemon)