An ambitious carnival man with a talent for manipulating people with a few well-chosen words hooks up with a female psychologist who is even more dangerous than he is.

Emilia arrives at her Aunt Inés’ hostel located on the Argentina-Brazil border, looking for her missing brother. In this lush jungle a dangerous beast which takes the form of different animals seems to be roaming around.

All the rules are broken as a sect of lawless marauders decides that the annual Purge does not stop at daybreak and instead should never end.