"The Source" is the supposed source of magic in the Amazon Basin. Emmet initially set out to find the Source as his final mission into the wild but got lost during the search. Tess, Lincoln and the new crew of Magus found Emmet's tapes of his journey. Kurt seems to have prior knowledge of The Source and is often heard talking on the satellite phone to an unknown party about the lengths he will go to to protect the Source.Some examples of the Sources' abilities include:
- Emmet walking on water.
- Emmet making fire in his hands out of nothing and being able to hold it without harm.
- The possession of people through a dragonfly entering their mouth.