Luca 2: Secrets of the Deep (2026) returns to the sun-washed Italian Riviera, but this time the adventure dives far beneath the surface. Now older and more confident, Luca has been living a year in the human world, studying, exploring, and dreaming bigger than ever. When he comes home to Portorosso for the summer, he expects a quiet reunion with Alberto and their families. Instead, he finds himself drawn into a mystery that has been whispered about among sea monsters for generations—an ancient secret hidden deep within the ocean, one that threatens both the land and the sea if left undiscovered.
Luca feels torn between two worlds again. While he treasures the friendships he made on land, he realizes how much he has missed the rhythms of underwater life. Alberto, now a seasoned explorer guiding young sea monsters, is eager to show Luca a series of newly discovered caves far off the coast. These caverns pulse with strange currents and glowing symbols, hinting at a forgotten civilization that vanished long before their time. Luca’s curiosity sparks instantly, and the two dive into a journey that is equal parts thrilling and terrifying.
Meanwhile, Giulia returns to Portorosso with big news: she has been researching marine ecosystems and believes strange environmental shifts are connected to something happening beneath the sea. When she joins Luca and Alberto in their search, the trio slowly uncovers pieces of a puzzle that point to an immense underwater chamber said to contain a powerful relic capable of shaping the ocean’s tides. Legends warned that if disturbed, it could unleash forces even sea monsters cannot control.
As they swim deeper into danger, the friends face swirling storms, mysterious guardians, and competing sea monster clans with conflicting beliefs about the relic. Luca’s compassion becomes the key to bringing different groups together, even as he battles his own fears about belonging. He realizes that the secret of the deep is not just about ancient power, but about understanding the past in order to protect the future.
In a breathtaking climax, the friends must confront the relic’s awakening energy and make a choice that will determine the fate of both worlds. Through courage, trust, and the unbreakable bond between them, they manage to restore balance. Secrets of the Deep ends with Luca accepting that he doesn’t have to choose just one identity—he can be a bridge between worlds, carrying the lessons of the ocean and the land wherever he goes.
