Sammeli is a young boy who likes adventure. The changing seasons of Lapland offer lots of excitement. Early winter means the nights are getting longer. At bedtime Sammeli is sometimes a little afraid of the dark when he lets his imagination get the better of him. Sammeli has started school and worries about all the new things he has to learn. Sometimes he feels lonely too. With a little help from his friends, old and new, he learns the power of imagination to overcome his fears, as he sets off on another adventure.