Once in a blue moon

Twice upon a time, Prince Rupert and Princess Julia saved the Forest Kingdom. Now known as Hawk and Fisher, famous for their years of keeping the peace in Haven, they are really quite happy being legends and retired. Today they run the Hero Academy, training young hopefuls to be heroes. But Hawk and Fisher's adult children, Jack and Gillian, have been kidnapped. They were taken by the Demon Prince, an old enemy from the Forest Kingdom who challenges the couple to one final battle for their lives. But Hawk and Fisher believe there's another motive behind the abductions, one connected to a case they worked in Haven many years ago--a case they refuse to discuss. And they will have to come out of retirement to rescue their children and finally lay that case to rest.