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Unstoppable Missions
are the missions associated with the third 39 Clues series, Unstoppable. There will be at least four missions, one for each book. Unlike the Cahills vs. Vespers Missions, the missions are able to be played without having to add the cards found in the book. Instead, the cards unlock a special part of the mission.

Mission 1: Written in Stone

In this mission, you find out that one of the ingredients of the Antidote is corn.

Mission 2: The Queen's Wings

In this mission, you find the antidote ingredient is the copper butterfly wing.

Mission 3: Royal Roots

In this missions, you find the dingetenga plant, one of the Antidote ingredients.

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