During the Great Calamity, a small Guardian named Terrako awakens within Hyrule Castle and escapes the destruction through a time portal, but is followed by some of
Calamity Ganon's Malice. Arriving in an alternate timeline before the Calamity began, Terrako is reactivated by
Link and
Impa during a battle. They take it to engineers
Purah and
Robbie for study, learning it comes from a future in which Ganon reawakens and destroys Hyrule. To prevent this,
King Rhoam assembles four pilots for the recently discovered Divine Beasts –
Mipha,
Daruk,
Revali, and
Urbosa – and commands them, Link, and
Princess Zelda to find the
Master Sword in Korok Forest. The group encounter the dark prophet Astor, who has learned of the future from Harbinger Ganon – the current timeline's Terrako, infected by the Malice from the original timeline – and plots to revive and control Ganon with the aid of the
Yiga Clan, led by
Master Kohga. Astor corrupts Korok Forest, but Link draws the Master Sword and forces him to withdraw; following this victory, Rhoam appoints Link and the pilots as Champions of Hyrule. Purah's research reveals the presence of Sheikah transport towers hidden underground; the Champions reactivate the towers and use them to lead a preemptive strike on the Yiga Clan's hideout in Gerudo Desert. Upon learning from Terrako's records that Ganon will return on Zelda's seventeenth birthday, Rhoam deploys the Divine Beasts and sends Zelda to train in hopes of awakening her sealing magic. Robbie and Purah are captured by Yiga spies while analyzing Terrako's memory. Terrako escapes and reunites with Zelda as the Calamity arrives. As Hyrule Castle is besieged and the Sheikah Towers are shut down across Hyrule, the Champions are ambushed in their Divine Beasts by the Blight Ganons, while King Rhoam seemingly sacrifices himself for Link, Zelda, and Impa to escape Hyrule Castle. Terrako summons
Sidon,
Yunobo,
Teba, and
Riju from the original timeline to assist the Champions, buying Link enough time to destroy the Blight Ganons. With the Champions saved and the Divine Beasts restored, they begin to clear the way to Hyrule Castle. To stop the timeline from changing, Astor sacrifices many Yiga Clan members to resurrect the Blight Ganons. Link is cornered by the Blight Ganons in Fort Hateno, but Zelda awakens her sealing magic to save him. Hyrule's army is bolstered by Kohga and the Yiga Clan's remnants, who seek revenge against Astor, and King Rhoam, who survived using a shield artifact given to him by Zelda. Purah uses the Sheikah Towers to transport their allies to Hyrule Castle for a full-scale assault against Ganon's forces. Although the Divine Beasts weaken Ganon's spirit form, Harbinger Ganon consumes Astor and becomes Calamity Ganon, who then corrupts Terrako, forcing Link to destroy it; during this time, Zelda remembers she activated Terrako as a child before King Rhoam took it away so she would focus on her training. Zelda and her allies confront Ganon, but are unable to damage him until Terrako self-destructs to weaken him, allowing Link to defeat him and Zelda to permanently seal Ganon away. The future heroes are returned to their timeline while Link, Zelda, and their allies look out at the now peaceful Hyrule. In a secret ending, Purah and Robbie repair Terrako, reuniting Zelda with her friend. ==Development==