Two thieves break into a zoo at night with the intention of stealing valuable animals. They manage to sneak past security and make their way to the primate exhibit, where they plan to steal a rare and expensive monkey.
As they are about to capture the monkey, they are startled by the sudden appearance of a security guard. A chase ensues through the darkened zoo, with the thieves narrowly avoiding capture at every turn.
Just when it seems like they might escape, they are cornered by a group of angry lions. The thieves are forced to surrender and are arrested by the police.
The daring heist at the zoo ends in disaster for the thieves, but the animals are safe and sound thanks to the quick thinking of the security guard.