After the events of the series.

Hector explored the castle of Styria and now, with complete freedom after the experience, he could use local objects. Thus, his curiosity led him to discover an endless corridor (portal), and the portal, in turn, sent him straight to our days.

The time is not specified, as well as the location of the events. The character's story is saved, and he will have to survive at your house. Or you'll have to survive with him.