The Tale of Blue follows a brave dolphin named Blue, who embarks on a perilous quest to rescue his sister Mary after she's taken by Gustav, an immorta…
Triplets Blue, Mary, and Matilda live in Beyond City. After a robot mishap, Blue faces family tension. Soon, shark emissary Gustav abducts Mary, nearly escaping before police intervene. His unnatural autopsy reveals dark secrets lurking in Beyond City.
While waiting in the council hall, Blue learns the scepter's royal power legend. He recalls seeing Gustav resurrected a year ago. Fearing for Mary, he rushes to the hospital, but Gustav abducts her again. After a failed chase, Blue is arrested.
In jail, Blue questions Billy and Oliver, but they lie. Flashbacks reveal their past with Gustav, who forced them into his schemes. Suddenly, Gustav appears, telling Blue to meet him to save Mary. With Chloe and Sam, Blue escapes, only to face new dangers
Gustav takes Mary to an old lab where she's shocked to find Matilda helping him. Blue enlists Jacob. Their plan to catch the clownfish fails, and Gustav demands Blue in exchange for the money. They set out for the lab to face him and save Mary.
Blue and his friends face Gustav at the lab. Amid the chaos, Matilda is revealed as his ally. With the wand's power, Blue and Mary defeat Gustav. Later, Green reveals a secret for them. They vow to rescue Matilda, who acted to save her father.