Teresa brokers a deal with an eccentric smuggler, Camila struggles to rebuild her empire, and Epifanio takes on a new partner he may not be able to control.

Teresa and crew rig a high-stakes narco horse race, but old enemies — and old flames — threaten to tear everything apart.

While trying to destroy Epifanio's drug smuggling tunnels, Teresa and James come face-to-face with a group of American border vigilantes.

Teresa's loyalties are tested when she is asked to assassinate a DEA mole.