The sea whispers secrets, but some truths are worth fighting for.

In Luca 3, Luca (Jacob Tremblay) and his best friend Alberto (Tom Holland) are back, but the waters they once swam in are now deeper and more dangerous. This time, their friendship is tested not by the world around them, but by the secrets they’ve kept hidden from each other. With the emergence of a new threat from the depths of the ocean, Luca and Alberto must confront the truth about who they are, where they come from, and the incredible journey that lies ahead. Emma Mackey joins the cast as a mysterious sea creature whose fate is intertwined with theirs, offering both hope and heartbreak as the bond between land and sea faces its greatest trial yet.

As Luca grapples with the weight of destiny, the world around him is shifting. His once peaceful life by the Italian coast is now overshadowed by an ancient prophecy and a war that looms beneath the surface. Tension fills the salty air as the ocean’s depths threaten to consume them all. With each revelation, Luca’s heart battles between loyalty and the need to explore the world he’s never known. The love and bond between him and Alberto are tested like never before, and the line between right and wrong blurs with every passing wave.