1896 in a world where airships fill the skies. But the hippos are dying.In East Africa, sisters Harriet and Khuwelsa Edgbaston set off in their steam-powered ornithopter on the trail of butchered hippopotamuses and their stolen teeth.They are lead across the Serengeti in an adventure that more dangerous than any they've encountered before.

1896 in a world where airships fill the skies. But the hippos are dying.In East Africa, sisters Harriet and Khuwelsa Edgbaston set off in their steam-powered ornithopter on the trail of butchered hippopotamuses and their stolen teeth.They are lead across the Serengeti in an adventure that more dangerous than any they've encountered before.