Lea and her brothers are normal teenagers living normal lives in Vancouver with their parents. (Well, except for the part where they're quintuplets . . . and ninjas in training.) But that normalcy is turned upside down when, one day, they get home from school to find their house trashed. On top of that, their parents are missing, and all traces of their existence have been erased. As they search the house for clues, they find a message from their parents telling them they are members of the Hirawa clan and that they should travel to Japan to get help from their grandparents. The only problem? They've never met their grandparents. They didn't even know they had grandparents. The Hirawa clan has historically stood against the Kaneshiro clan, who are planning to release the Y¿kai, creatures of myth that were banished by a Hirawa ancestor long ago. And according to prophecy, only the quintuplets have what it takes to stop them. But to do that, they'll need to survive life under the Hirawa clan's roof, find their parents, and unlock their true powers. No sweat, right?