The player characters encounter the Hummingbird (crewed by Bruin Shambrath, Korin Haagin and Ponn Jariss) as it flees from a mercenary squidship. After they rescue the Hummingbird’s crew, Bruin Shambrath asks them to help him save Greatspace from a vampire bard called T’Lann. He is seeking his childhood mentor, a sage called Keriacus. Phlogiston encounters included: Lizard men pirates, void scavver, and human merchants aboard a tradesman ship.
The player characters travel with Bruin Shambrath to Herospace to find Keriacus and seek his advice. Herospace is a crystal sphere with nine suns orbited by nine planets. One of those planets has a moon. As the player characters and Bruin enter the system The Rational Order of Magistrates dispatches ten hammerships to intercept the Hummingbird and escort it to the moon Borden. Once on Borden, they convince the Order to allow them to land on the planet Cumberland and visit Keriacus. Keriacus identifies T’Laan as a half-elf called Dorin from Aglarond in Realmspace. He then uses a crystal ball to create a portal that allows him to scry on T’Laan. At first this is successful, but T’Laan detects the scrying, drags Keriacus through the portal and sends ten ju-ju zombies to attack the party while he kills Keriacus. After Keriacus is killed one of his friends (also a sage) approaches the party and tells them to travel to Faeriespace, find Aelivere and obtain the sun seeds.
The party travel to Faeriespace to find Aelievere and ask him for the sun seeds. Faeriespace is an unusual crystal sphere that has a giant tree, instead of a normal planetary system. Sixteen suns and eight planets are supported on the branches of this tree. A vast city called Armon is found on the trifurcation of the tree. The party asks Aeliever for the sun seeds and he tells them he will give the seeds to them in exchange for passing the Test of Ancient Yesterdays by stopping the isoperites that are invading the tree. The party successfully stops the isoperites, Aeliever gives them the sun seeds and they set off for Greatspace.
The party witness four galleons, loyal to House Shambrath fleeing two hammerships. As they approach to help two Grey Sword pirate ships also join in, assisting the House Shambrath ships.
The party arrive in Greatspace to deal with T’Laan. Greatspace is a crystal sphere with seven planets and an asteroid belt orbiting a sun. One of those planets has a moon. After battling T’Lann’s minions they take of and fly close to the sun where they use the sun seeds to re-ignite it. When they finally confront T’Laan he uses a magic amulet to transport himself to Darkspace.
The party pursue T’Laan to Darkspace. Darkspace is a lifeles crystal sphere containing the remains of what used to be an ordinary planetary system. The largest planetary fragment contains T’Laan’s lair, the Tower of Night. Twenty miles away from this tower are the Thesalians who have been tricked into coming to the system, being used as feeding stock for the undead that inhabit this sphere.
After the vampire lord’s defeat Bruin ask the player characters to come back to Greatspace to testify about the actions of T’Laan. After they convince the citizens of what happened, Bruin rewards them with Knighthoods and a joint Dukedom on the planet Hect. He also gives them the Hummingbird and grants ot it and the Voidsong unattached status are Greatspace privateers.