Rick and Morty: Youth in Rickvolt

Rick’s been cagey lately—especially cagey. And secretive. After yet another misadventure with Morty goes haywire, Morty begins to pull away from his grandfather. So Rick does what any healthy, mentally stable grandparent would do: he secretly creates a universe with new grandchildren who actually love him! Only problem is, that universe has now reached adolescence and is rebelling, threatening the entire universe. This uprising, led by a fierce, glass-eyed Morty and his army of revolutionaries, aims to fight and kill the very god that created it!

Collecting Rick and Morty: Youth in Rickvolt #1–4.