The story begins with Lydia Quixano Pérez saves her son Luca from a massacre that wipes out her family in Mexico. The hit was organized by drug kingpin, Javier Crespo Fuentes, who was angry at Lydia’s husband writing an exposé on Javier. This reporting resulted in his daughter, Marta, committing suicide when she found out about her father.
As such, Lydia and her son go on the run to become illegal immigrants into the US. Lydia evades Javier and his spies by running from Los Jardineros to Acapulco to Chilpancingo until they reach Huehuetoca, here, they witness the rapist, Lorenzo, at the migrant facility. Lydia also befriends two sister, Soledad and Rebeca, and joins them on their travels.
They all board the La Bestia freight train used but immigration agents intercept the train and take all the migrants except Soledad and Rebeca. As Lydia and Luca are Mexican which allows them to pay a toll for their release, and she also pays for the sisters’ releases.
El Chacal, a coyote, arranges for the group to cross the border, but Lydia does not have enough money. On their trek, the group is faced with a US Border Patrol drone, armed vigilantes, bad weather conditions. However, they manage to make it to the US where Lydia, Luca, Soledad and Rebeca live together.