Hiccup, Toothless, Fishlegs and rest of the flock finally have a safe place where they can stay together without the need to hide and with an adventure to look forward to. Neither is enough to stop the nightmares of past suffering and even the safety doesn't last forever. Can Hiccup face the Nightmares that haunt him...
Gobber couldn't convince Stoick to let Hiccup into the ring for dragon training, but situation gets complicated, when Hiccup faces a Monstrous Nightmare during a raid again. Except this time things go very differently thanks to certain black dragon. Over time an unbreakable bond is formed between two lonely souls.
Direct continuation to Another Nightmare book 1, strongly recommended to read that first. Hiccup and Fishlegs finally did it, they left Berk with the dragons, but what next. Even after getting away from the queen, they need to survive on their own while some of their new flock get into new trouble. A new enemy seek...