The liars of Mariposa Island

In 1986, siblings Elena and Joaquin Finney struggle with their manipulative, alcoholic mother and look for any way to escape Mariposa Island. Elena starts babysitting for a visiting family and sneaking off with a new boyfriend while Joaquin dreams of finding his estranged father in California. Meanwhile, their mother reflects on life in the 1950s as the daughter of wealthy white Cubans who sent her to the United States during the Cuban revolution where she experienced the turmoil of being an outcast immigrant in Texas. After Joaquin makes a startling discovery, the lies and secrets that have defined their family come to light.