In the colorful waters of the Great Barrier Reef, young clownfish Nemo is eager to explore the world on his first day of school, but his father Marlin’s fear runs deep after losing his mate and nearly all their eggs to a barracuda attack. Born with a smaller “lucky fin,” Nemo longs to prove he’s capable, while Marlin struggles to let go. When Nemo is captured by a scuba diver after swimming beyond the reef, Marlin sets out on a perilous journey across the ocean to find him. Along the way, he teams up with Dory, a kind-hearted and forgetful blue fish, and encounters vegetarian sharks, dazzling jellyfish, sea turtles riding the ocean current, and countless underwater wonders—all while learning lessons about trust, courage, and letting go.

Meanwhile, Nemo finds himself trapped in a fish tank at the Sydney Harbour Aquarium, where he befriends the Tank Gang, a group of aquarium fish determined to help him escape back to the ocean. As father and son face challenges on their separate journeys, both must overcome fear and self-doubt. When Marlin and Nemo are finally reunited, Nemo’s bravery helps save Dory and a school of fish from a fishing net, proving he is stronger than anyone ever believed. With renewed faith in each other, Marlin learns to trust Nemo’s independence, and Nemo heads off to school once more—ready to explore the big blue world with confidence, heart, and hope.