After sneaking into the Basilica Cistern at night, the Top Men navigate the dimly lit underground chamber looking for the X that marks the spot on their map. Discovering a hidden room, they uncover their next clue, directing them towards the German consulate where important records are kept.

In the 1950s, a shadowy unit of the US Government called the Top Men sends three of its agents on a quest to find the lost tomb of Alexander the Great. In competition with the Soviets, the team begins their mission in Istanbul where they are slated to meet a contact with intel on Alexander’s breastplate.

Bing, Bart, and River are surprised when the three non-human entities they met in the darkened woods agree to answer their questions. However, there is a substantial catch. After their encounter, they head back to Fairbanks, satisfied they’ve achieved their goals. But before Bing and Bart leave Alaska, the whole team decides to drop in on their acquaintance Jarvis Easley.

Having encountered a hostile Bigfoot while investigating the crashed pyramid UFO and its badly burnt occupants, the team tries to deescalate a dangerous situation. Following that, they land in the tiny village of Anaktuvuk Pass where the next day, they travel to the sight of the newly formed mound that River had spotted before.

After meeting a suspicious man in the airport hangar, Bing, Bart, and River take to the skies, headed towards a mysterious mound. Along the way, their attention is diverted to a column of smoke coming from the ground below, and the team lands for a closer inspection.

Self-proclaimed cryptozoologist Bart Garfinkle and gonzo journalist Bing Kingsley team up once again to investigate Bigfoot and other mysteries in the Alaska Triangle. After arriving at a log cabin in Fairbanks, they get a visit from a vaguely familiar local man who mentions strange lights in the sky. Afterwards, they meet up with bush pilot River Sloane with plans of flying to any destination of interest.

The sky whalers clash with a Saturnian Shiftbeast aboard the Lodestone, leading to an alarming outcome for one. Later, as the Jovians attempt to haul their prize back to Port Hallwark, they are confronted by Captain Michel in his ship the Calypso. A knock-down-drag-out battle inevitably follows.

As Xavier Barbeau hangs suspended in Jupiter’s deep atmosphere hunting the legendary Blubberalla, Philbert Edward Glass and Dr. Anias Ambercrom are attacked by kite creatures onboard the HMS Jover. Afterwards, as they continue their journey, Philbert’s compass starts to spin wildly, and they spot what must be the Lodestone, drifting in the clouds. However, after boarding the alien ship, the sky whalers quickly discover they are not alone.