Aurelio and Citlali meet each other in a small hotel of Mexico City during the darkest days of theirs lives. He just buried his son, murdered in broad daylight. She had to abandon her daughter with her violent father. Aurelio wants the police to do their job and capture his son's murderers. Citlali needs a legal document to fight for her daughter's custody. Their quest for justice soon transforms into the need for revenge. Little by little, love grows and a pact is forged between them: to help each other take justice into their own hands.