On their last trip to space Monty, Ivory and Echo unexpectedly met missing astronaut, Ryker Jackson. After accepting his mission, the crew is tasked with traveling the solar system to gather samples in order to create the super fuel for Jackson's new reactor. Their next destination, Mercury.., and with many new challenges along the way, the kids quickly realize that navigating space isn't as easy as they thought. Faced with an asteroid field, space walks, and blistering heat, can the crew stay on The Dark Side of Mercury, collect what they need, and return home safely?