A boy named Ollie needs to protect Earth from monsters in the newest Nickelodeon cartoon, Ollie’s Pack. His backpack doubles as a portal that monsters climb through, sometimes to his advantage, and sometimes to conquer our world.

The first episode will premiere on April 6 at 4 p.m. and follow Ollie as he gets one monster to do his laundry and another to help him make a superhero movie. Check out the trailer for the show below.

When the monsters get out of hand, Ollie needs his friends to send them back to the monsterverse. Characters introduced along the way include a bounty-hunting duo and a high ranking monster minister.

Kids can catch premiere episodes of the series on Nickelodeon Mondays through Thursdays during the weeks of April 6 and April 13.