From publisher blurb:

For centuries, the intelligent races of Krynn have looked upward, toward the moons, planets, star, and the bery crystal sphere of Krynnpace. They have looked up and wondered, and gone back to their planetbound lives.

Meanwhile, on other worlds in other spheres, spelljamming ships have begun to venture into the Void; they have encountered vast evil--and vast wealth--in the trackless reaches of wildspace. Their ships have explored their own spheres and are even now moving toward Krynnspace.

And on Krynn, the art of spelljamming is stirring. Unbeknownst to most of the inhabitants, spelljamming ports are opening. Spelljammers from other spheres are exploring the planet, and explorers from Krynn are rising into the sky and into space. Soon the mysteries or Reorx, Chislev, the Black Clouds, and the dark planet Nehzmyth will be yeilded up--or will destroy those seeking to investigate.

Now you can add spelljamming to your Krynn based campaign with Krynnspace, an accessory for the SPELLJAMMER campaign setting. The SPELLJAMMER boxed set is needed to use this booklet.