Actually it is more likely that this sentence would be used to describe a fairytale. As you see if you hover your mouse over 'eventyret' is can mean both the adventure and the fairytale. Though the meaning of adventure is sort of secondary as the idea of an adventure is not very prevalent among Danes.
You could do that, but usually we refer to them as "togter". "Et togt". "Et vikingetogt".
Common phrase told in danish x factor to partecipants when they get kicked out. I swear
Hans Christian Andersens eventyr? Er det korrekt? cfr. http://www.andersen.sdu.dk/vaerk/register/eventyr.html