«Magnus (AMANDA TAPPING) and Will (ROBIN DUNNE) are off to Bolivia, in a race with a SCIU extraction team to find a legendary and extremely rare Abnormal. The feathered serpent that the Aztecs called Quetzalcoatl is said to bestow immense powers on his followers. But when Will and Magnus face off against the SCIU team and get trapped by a cave-in, they discover that there’s more to the old legends than they expected. Lost and injured, the pair needs to find a way out of the cave to seek medical help. To stay hydrated, Magnus refills their canteens from a spring near the cave-in. But they quickly learn that there’s something quite unexpected in the water. As they try to find a way out, Magnus and Will face some harsh truths about themselves and their relationship as they fight their way up from the depths. Back at the Sanctuary, Henry (RYAN ROBBINS) works on a new, futuristic invention while recording a series of video letters to a special someone.»