The Ventura twins are yanked into another dimension where they meet a distant cousin who gives them an extraordinary mission: travel through time to preserve their culture's true history. Along the way, they meet people from Africa, Europe, and the Americas who have left their mark on Puerto Rican heritage. In the twenty-first century, Alexa and Beni navigate school, friendship, and family while keeping their time-traveling quests a secret. When a natural disaster devastates islands across the Caribbean, the twins understand what's at stake for their ancestral homeland. As Puerto Rico faces an uncertain future, the twins do all they can to witness, find, and remember its past.