Lu has a perfect life. Or so she pretends to have. She meets the handsome, short-tempered Argentinian, Diego, who is on a visit to Mexico, and she is confident to get him head over heels in love with her. In order to win a wager with her friends, her life will take a turn when she does the impossible to win him over, including taking a trip to Argentina to look for him.

A former U.S. Marine, Lázaro Mendoza, enters a maximum security prison in Mexico (La Rotunda), under a false identity and accused of an alleged triple murder. Now as Dante Pardo, his mission is to infiltrate a dangerous band of inmates and guards that operate inside and outside of prison who are the prime suspects of the kidnapping of the teenage daughter of U.S. Judge, John Morris. Inside La Rotunda, Lázaro has to find out who carried out the kidnapping and the whereabouts of the girl.

It follows Becca, a forensics expert who, when investigating a murder, realizes that the body of the victim looks exactly like her.