The beloved duo of the other half of Team Rocket we're ever shown finally get their own spin off movie (and despite the title, nobody ever seems to get Bob's name right), in which they accidentally kidnap a Snubbull from a daycare, and not a stronger Pokemon.

They are devastated and seek to return the Pokemon and swap it for the trainer's Dragonair, but end up growing  attached to the Snubbull and even watching it evolve into a Granbull.

It is a tale of love, letting go, heartbreak, coming of age, and the true meaning of the bond between trainers and their Pokemon, climaxing when Granbull sacrifices the only move left behind from its days as a Snubbull, its days with its old trainer, to force itself to learn rain dance to save Brett and Cassidy from a burning building, and their untimely demise. 
It also tells the story for the canonical appearances the trio makes in the series.
A true must for the Pokemon Master in all of us.

The Wolf of Wall Street.