In Critters 3, the infamous alien creatures return to Earth, this time terrorizing a small apartment building in a big city. As the critters wreak havoc on the unsuspecting residents, a young boy named Josh must find a way to stop them before it's too late.
With the help of his resourceful grandmother, Josh sets out to outsmart the critters and protect his fellow tenants. But as the creatures multiply and become more aggressive, Josh realizes that he may be in over his head.
As the critters close in on their prey, Josh must come up with a plan to defeat them once and for all. Will he be able to save the day and rid the building of these pesky aliens, or will the critters prove to be too much for him to handle?