Desperate to attract subscribers to his fledgling website, 'Journey to the Dark Side', ex-adrenalin junkie and slacker Simon Newman hires someone to guide him through the notorious Cwm Pot caves, so that he can film the journey and put it on the internet. With a tragic history, Cwm Pot has been off-limits for decades, and unfortunately for Simon, the guide he's hired is as unpredictable and dangerous as the watery caverns that lurk beneath the earth. After a brutal struggle for survival, Simon barely escapes with his life, but predictably, the gruesome footage he managed to collect down in the earth's bowels goes viral.

Ignoring the warning signs of mental trauma, and eager to capitalize on his new internet fame, Simon latches onto another escapade that has that magic click-bait mix of danger and death: a trip to Everest. But up above 8000 feet, in the infamous Death Zone, he'll need more than his dubious morals and wits to guide him, especially when he uncovers the truth behind a decade-old tragedy -- a truth that means he might not be coming back alive. A truth that will change him -- and anyone who views the footage he captures -- forever.