Described as a modern-day take on William Shakespeare's King Lear by The Hollywood Reporter, Promised Land captures the heated fight for the flourishing vineyard, which is currently spearheaded by Joe Sandoval (John Ortiz) and his wife, Lettie (Cecilia Suárez). Joe and Lettie have a blended family. Lettie shares a son with Joe, Junior (Miguel Ángel García).

Joe and his first wife and wealthy hotel tycoon, Margaret Honeycroft (Bellamy Young), share three kids, Veronica (Christina Ochoa), Carmen (Mariel Molino), and Antonio (Tonatiuh). Antonio used to be in a relationship with Javier (Cruz Delgado), the newly hired manager of Heritage House.

Lettie and Joe are also raising Mateo (Augusto Aguilera), Lettie's son from a previous relationship. Mateo used to manage the vineyard. Lettie's ex-husband is now a priest.

Several power players pose a threat to the family operation.

Most notably, Margaret, a local hotel magnate who already knows the vineyard like the back of her hand, is ready to re-acquisition the place which she claims has been stolen from her father. Margaret teams up with her son, Antonio, to get ahead and carry out the plan.