Bill, Gary and Ruby head towards a sacred lagoon that has never been visited by a car before. To get there, they must travel up the winding, dangerous rivers of the Los Tuxtla jungle – which according to local legend, is guarded by supernatural forces. Taking on rivers is challenging enough, but driving through and up one will need a new level of skill. Facing water in Ruby’s engine block, snakes, caves of bats and deep lagoons, the trio will have to come up with some extreme solutions. The wheels will need to come off to get down steep valleys and Ruby will need to swing like a pendulum around boulders to make it to the remote lagoon ahead.