Strong As Death. On Eagles Wings, #3

Tristan hadn't planned on spending his summer sorting through a pile of ancient garage sale finds, but since Raven insists, that's what his whole crew is up to when they stumble upon something even more powerful and far more terrifying, something even their uncanny power can't unmake! The hunt is on, the whole world seems intent on taking the Shards of Atlantis for themselves and unleashing the power that destroyed the lost city, which can only spell disaster for the entire world, but how do you destroy something that can't be unmade?