As dark forces rise once more in the wizarding world, Newt Scamander (Eddie Redmayne) is summoned by the British Ministry of Magic to investigate a series of mysterious disappearances in the heart of London. Accompanied by his loyal creatures and a reluctant but determined Tina Goldstein (Katherine Waterston), he uncovers traces of an ancient magical entity—The Abyssal Wyrm, a legendary dragon long thought to be a mere myth. As they dig deeper, they realize that the creature is being controlled by a secret faction of dark wizards seeking to plunge the world into chaos.
Newt and Tina race against time to track down the beast before it is unleashed upon the wizarding and Muggle worlds alike. Their journey takes them across Europe, from the shadowy alleyways of Paris to the icy peaks of the Carpathian Mountains, where an ancient order of magical scholars holds the key to stopping the monster. Along the way, they reunite with old allies, including Jacob Kowalski and Queenie Goldstein, whose knowledge of forbidden magic proves invaluable. However, they also cross paths with an enigmatic wizard, Elias Blackthorn, who may hold secrets about the Wyrm’s true origins.
As tensions rise and betrayals emerge, Newt and Tina find themselves at the heart of a magical war between those who wish to control the beast and those who seek to destroy it. When the Wyrm finally awakens, its sheer power threatens to consume entire cities, and even Newt’s strongest creatures struggle to contain it. In a desperate bid to subdue the beast, Newt must make an unthinkable choice—sacrifice one of his most beloved creatures or risk the fall of the wizarding world.
In a climactic battle beneath the streets of London, Newt and Tina confront the dark wizards, facing their greatest fears and pushing the limits of their magic. With the help of an unexpected ally, they manage to break the spell binding the Wyrm, allowing it to return to its ancient slumber. But as the dust settles, Newt realizes that the true danger is far from over—the dark faction remains in the shadows, growing ever stronger.
As the wizarding world recovers, Newt and Tina are left with an uneasy sense of foreboding. With powerful forces still at play, they know that their journey is far from over. As they prepare for what lies ahead, one thing remains certain—greater threats are yet to come, and the fight to protect magical creatures, and the balance of the world itself, has only just begun.