"Eiga Shimajirō Miracle-jira no Nanairo Carnation" is a feature-length anime film centered on Shimajirō, a cheerful and curious young tiger, and his friends as they embark on an adventure to Miracle Island. The story begins when Shimajirō and his family receive a mysterious invitation to visit the island, which is said to grant wishes. Accompanied by his sister, Mimii, and their parents, Shimajirō sets off on a journey filled with wonder and discovery.

Upon arriving at Miracle Island, Shimajirō and his friends—including the mischievous rabbit, Torippī, and the shy bear, Nyanmi—encounter a magical flower known as the Nanairo Carnation. This flower is said to bloom in seven colors and has the power to make dreams come true. However, the flower is in danger of losing its magic due to the island’s fading energy. To restore the flower’s power and save the island, Shimajirō and his friends must work together to solve puzzles, overcome challenges, and learn valuable lessons about teamwork, kindness, and perseverance.

Throughout their adventure, the group meets various inhabitants of Miracle Island, including a wise old turtle who guides them and a group of playful animals who assist in their quest. The narrative emphasizes themes of friendship, family, and the importance of believing in oneself. As Shimajirō and his friends navigate the island’s magical landscapes, they discover that the true miracle lies not in the flower’s power but in the bonds they share and the courage they find within themselves.

The film’s plot is driven by a series of episodic challenges that test the characters’ problem-solving skills and moral values. Each challenge brings them closer to understanding the island’s mysteries and the significance of the Nanairo Carnation. The climax involves a heartfelt resolution where the characters’ efforts culminate in the restoration of the flower’s magic, ensuring the island’s survival and the fulfillment of their wishes.

"Eiga Shimajirō Miracle-jira no Nanairo Carnation" is a family-friendly story that combines adventure, fantasy, and life lessons, making it accessible to younger audiences while offering engaging moments for viewers of all ages. The characters’ interactions and growth are central to the narrative, highlighting the importance of cooperation and empathy in overcoming obstacles.