When a druid clan visits Camelot to forge an alliance, they offer Arthur a protective rune tattoo as a diplomatic gift. The mischievous tattooist notices the way Arthur looks longingly at Merlin and tattoos a rune on Arthur's back that shields him from harm in battle or, apparently, in bed.
With the tattoo still new and heavy with magic, Arthur finds himself a slave to his own awakened desires from its unexpected side effects – until Merlin offers to help, that is.











