Doraemon: Nobita’s Treasure Island

Nobita hears the tale of Treasure Island and longs to discover his own treasure. Doraemon provides a special treasure map that supposedly marks a hidden island. Meanwhile, a media report announces the appearance of a completely unknown island, fueling Nobita's curiosity.

Nobita, Doraemon, Shizuka, Gian, and Suneo decide to pursue the mystery island. Doraemon supplies a ship for the journey, and Shizuka eagerly joins the adventure. Gian and Suneo tag along, hoping for excitement.

As they draw near, a gang of pirates attacks out of nowhere. The island itself begins to move, revealing it is part of a massive, advanced ship. The pirates retreat but manage to abduct Shizuka during the confusion.

Nobita and friends manage to rescue an unconscious boy named Flock from the wreck. Flock explains that the pirates are time travelers who plunder treasures from different eras. He admits he used to be part of Captain Silver's crew but left after refusing to follow orders.

Using the treasure map, Doraemon traces the pirate ship's location across the seas. The group follows the leads, hoping to intercept the pirates and rescue Shizuka.

On the pirate ship, Shizuka encounters Sarah, Flock's sister who resembles her. Sarah agrees to help Shizuka and the others, seeing a chance to confront their father's plans. A tentative alliance begins to form against Captain Silver.

Flock and Sarah reveal Captain Silver is their father, who has descended into madness after their mother's death. He has become obsessed with gathering treasure and intends to launch into space to colonize a new planet. This plan would require draining Earth's energy, risking the planet's destruction.

Nobita and friends mount a rescue operation but end up freeing Sarah instead. Shizuka is forcibly brought to Captain Silver, increasing the stakes of the mission.

Captain Silver activates the final stage of his scheme by preparing to launch his ship into space. He plans to drain Earth's energy to power the launch, showing his willingness to destroy his home for treasure.

Nobita, Doraemon, Flock, and Sarah attack the ship in a decisive assault. Gian and Suneo stay aboard to occupy the pirates while Flock seizes control of the ship and ejects the energy back toward Earth.

Captain Silver confronts the consequences of his obsession and abandons his plan. He reconciles with his children, promising to be a better father.

Flock, Sarah, Captain Silver, and the rest of the crew return to their own time. Nobita and his friends return home with Nobita gaining a deeper appreciation for his father Nobisuke.