Despicable Me 4 follows Gru and his family, including his new son Gru Jr., after they are forced to leave the home they know and love when his nemesis Maxime Le Mal and Maxime’s girlfriend Valentina come after him. When Poppy, the neighbor girl, recognizes him, she instantly blackmails him to help her become a villain and pull a heist. Meanwhile, some of the minions become Mega Minions while staying at the Anti-Villian League.
https://screenrant.com/despicable-me-4-movie-director-chris-renaud-interview/