Alasdair is the seventh swan-brother from the famous fairy tale, left with a swan's wing instead of one of his arms because his sister was unable to finish that last shirt in time. He is a young Scottish lord in this novel, incredibly handsome but shrouded in self-pity and the immaturity that comes from having such a strange "childhood". Since he lacks his sword-arm, he has a bodyguard, Ewen, a gruff mercenary who is both more kind and more haunted than he seems.
Alasdair also has a sweetheart, Fenella, who finds out about what ails him--and being an intrepid young lady, sets out immediately to find the magic to give him back his arm! But dangers await, and many dumb decisions are made by various characters, and misadventures ensue. We come to care for all of the characters. Although I would have preferred a different ending to the story, _The Seventh Swan_ was worth reading.