Part 1

Historical drama. Lupus narrowly escapes kidnap by slave traders, but his friend Porcius and other Ostian children are snatched. Flavia and her friends sail after the traders, but their ship faces many dangers that prove they have a traitor right there on board with them. Lupus also finds out whether his mother is alive or dead and has a final encounter with Magnus, the mythical figure who masterminds the slave trade.