Old world is dead. A catastrophe of forgotten origin had wiped the old civilization out. Ice age came after. And then - a thaw, when water levels rised tremendously and even ancient icebergs began to melt. People of this post-ice age are peaceful and remember very little of their history. They can only guess what it was like by the 'gifts' - objects and creatures wandering icebergs bring to their shore each spring. Sometimes these 'gifts' are dangerous, or even alive...
