Twelve-year-old Nani Sacro loves surfing. She's been skipping school to ride along the waves of the Puerto Rican coast ever since she was three.
But one week after her birthday, she decides to head to the water escaping the feeling of always being the odd one out. But something feels different. Nani soon discovers that her connection to the ocean goes beyond surfing. With the help of her brainiac best friend, Nani realizes she can see underwater.
From seeing underwater and hearing the creatures of the ocean Nani's abilities only grow. But just when things are looking up, a mysterious creature from the depths of the ocean threatens Nani's family and town. She must learn to harness her abilities and find confidence in herself. After all, the fate the people she loves hangs in a balance.