Allandra and Ignis have been living for two years in Rokkaku, a secret training school for ninjas.

Now they've been assigned a secret mission in London - which will take them back into the path of their drug-baron father.

A surprise visit from their brother, Michael, convinces Allandra he's changed, but Ignis isn't so sure. So when Michael arrives at Rokkaku, seeking a family reunion, Ignis is suspicious. Could Michael still be working for their father? Allandra doesn't know what to think - but by welcoming Michael to Rokkaku, will she be bringing danger right to the heart of the ninja school?