I bought the ship from a toy store. The maps were adapted from Alliance of Nefelus and another module (where the face map came from). The story was that the PCs came through a portal from a tropical world of good into an opposite world of cold and evil. The worlds were tied together in an equal-opposite reaction way that was killing both worlds, so their mission was to find the evil orelord on this world and destroy his scepter of worlds, forever breaking the link between the worlds.
In the second-to-last map, the PCs emerged from the portal and were attacked by the behir up on its ice perch. Then the PCs turned the corner and were attacked by frost giants with snowballs and ice pillar/storm powers. After defeating the giants (barely), they went up the ramp and emerged from the skull mouth on the last map, where they were beset by a couple saughin and frost giants. The giants attacked from range and were quite a challenge to the PCs attempting to cross the chains to the ship (the frigid water was a significant hazard and the chains were not easy to cross). Eventually they defeated the baddies and had poor fortune on their skill challenge to convert the slave crew of the ship (only 2 of the crew agreed to help the PCs). This led to a long and unfortunate trip to the Overlord's Isle, that included a confrontation with a white dragon and a tidal wave of ice. Eventually their battered ship made it to the Overlord's Isle, but with the time for their mission almost up, they attempted a desperate gamble that failed and led to their headlong flight into next week's adventure....