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Condemned to live in scarcity behind a colossal wall that divides Gabhán City in two, Alba is part of a network that distributes medicines and water to the most needy in a clandestine hospital. Her godmother, Lucre, seeks to save her by risking her life in a covert traffic of illegal people to the other side of the wall. Alba refuses to leave her people and the hospital, so Lucre is forced to lie to her in order to convince her and thus embark her on a journey across the border that changes her life forever.

It tells the story of Marta and Teresa, who will face each other in the "Tamalon Navideño" contest, to find out who prepares the best tamal. To win the award, they will put their friendship of years to the test.