Lohikäärme is the second story of an aviation fantastic tales collection named Worms after the wormhole notion from theoretical physics where stories intertwine fantasy and historical facts. Lohikäärme is set by the end of the eighties at a time Western countries were looking at the mighty MIG-29 torn between feelings of anxiety and admiration. A Finnish Air Force test pilot takes the controls of the fantastic machine for a secret flight over the Bear's country