It's Japan 1192, seven years since the battle of Dan-no-ura that marked the beginning of the feudal era. It's also been seven years since Isabellae Ashiwara started roaming the country, accompanied by her father's ghost, earning a living by the point of her sword. And seven years that she's been looking for her long lost sister, Siuko. The time has at last come for this bounty hunter to face up to her past and take charge of her destiny.

Still persevering with her quest to be reunited with her sister, Isabellae Ashiwara has taken to the raging seas in pursuit of the ship aboard which she thinks she might find Suiko. But, what with the very real dangers of the present and the increasingly oppressive ghosts of the past, Isabellae begins to doubt everything she once thought she knew. It's high time the dead went back to where they belong, once and for all!

Isabellae's quest to track down her sister Suiko has now become a matter of the greatest urgency. Suiko is the only one with the power to heal Jinku, who has been bitten by one of the zombies summoned to the South China Seas. Our redheaded swordswoman, Isabellae, knows of only one way to get money quickly to finance her search: bounty hunting! As she writes history in ideograms of blood, little does she know that the family reunion will take place sooner than planned...

And now, a total change of scene for the saber-toting redhead! Now that Suiko, dying, revealed the true nature of their family's destiny, Isabellae has gone off to the land of her roots, Ireland. Her Celtic relatives have quite the surprise in store for her. She'll end up joining the combat for the control of the island. And yet, no training could have prepared her to face the enemy that lies under the tomb of 500 kings...

In an effort to defeat the English invaders and their Norman mercenaries and free their island from the yoke of the Crown, the druids of Ireland strike an unholy alliance with fearsome entities summoned from the darkness: the ancient Fomorian gods and their armies. Surrounded by monsters of unprecedented power, Isabellae, her friends, the Irish people and the English forces unite to wage the battle of their lives and save humanity from a horrific fate.

On the sacred Hill of Tara, the children of Eire prepare to wage their final battle, this one against an army of powerful winged creatures claiming to serve the one true God. The remaining members of Isabellae's group are ready to die fighting at their friend's side, but additional help arrives in the most unexpected form, as the bloody conflict takes on epic proportions and the fate of all lies in its outcome. Themes of sacrifice, honor, and the true meaning of the way of the warrior come shining through in Book 6 of the series.