Three curious students go to a rough neighborhood to buy drugs, a surprise police raid forces them to escape with the vendors through a labyrinth of houses and streets in order to avoid getting jailed.
Lina wants to become an animal and is willing to try it. Eduardo wants to tame her but can't. Primal Force explores the limits of a couple unable to engage.
The plastic artist Cesar Arechiga recreates his living room and studio in the maximum-security prison of Puente Grande, Jalisco, in which fifteen inmates learn about paper production, clay modeling, sculpting and painting. Through this artistic interaction, they share their personal experiences of how they became involved with the world of drug trafficking.