Milo Murphy's Law

Fungus Among Us (1x34)

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Milo, Cavendish, and Dakota travel to 1965 to help Orton Mahlson create The Doctor Zone Files. Unfortunately, they find that Derek, the son of King Pistashion, has somehow survived and has body snatched pretty much everyone, even in the present. In a cliffhanger, it turns out their sole hope lies in a particularly incompetent pharmacist.