The greatest danger in digging through the past is not what you find, but what you leave behind. When archaeologist Dr. Thomas Long stumbles upon a pristine Viking burial site he can barely contain himself. That is until an old friend offers him the chance to really get close to some long-gone worlds... Dr. Jon Walker has cracked time travel but before he can shoot back into the past he needs a team he can trust. Along with his remarkable assistant Gracie Stevenson, Thomas begins a perilous journey into the darkest depths of history. Mistaken for Norse gods by Vikings in frozen Denmark, unwittingly embroiled in a mutiny on Blackbeard's ship, the Queen Anne's Revenge, and forced to pursue the elusive Jack the Ripper though the streets of Victorian London, the team quickly realise that the lure of easily-gained gold and power are sometimes too tempting to ignore. As the dangers mount ever higher, Thomas rapidly realises that meddling in the past could do more than change his life...it could change the world.