'No Manches Frida' is the story of Zequi (Omar Chaparro), a recently released bank robber who goes to recover stolen money buried by his ditzy accomplice before going to jail. They return to the site only to find that Frida Kahlo High has built a gymnasium over the loot. To get the money, he poses as a substitute teacher for a school that can’t seem to keep any teachers around. He meets the sweet and earnest Lucy (Martha Higareda), as well as an unruly classroom. Lucy and her fellow teachers (Fernanda Castillo and Adal Ramones) have no control over the students, and Zequi comes in ready to lay down the law - but he quickly finds out that life on the inside may have been easier to deal with.