In a realm not so far away, except perhaps in time and culture, live peacefully humans and dragons alike. The creatures have lived so long together that their society have grown to accept and encourage mixed relations and marriage between their kinds. A tweek of nature even made inter-breeding real, but only for some of them. The reason for this is yet unknown and marriage can be refused if the couple is found to be infertile. When infertility meets with drastic laws and greedy manipulators, love will be hard tested on the altar of justice.