Deep in the night, Nan and Gareth's house starts disappearing piece by piece. Strangely, so does Dylan's. Of all the houses on the block, theirs are the only two in self-destruct mode.
Do the mysterious disappearances have something to do with Dylan and Gareth's grandfathers who, according to Nan, shared a "very close bond"? Or do the houses have a magical plan to unite the young men?