Ganta is persuaded to take part in a mass prison escape planned by Scar Chain, an antiestablishment group, but a traitor has already notified a unit formed to eradicate prisoner rebellions known as the Undertakers.
Ganta is recruited into the Scar Chain, an antiestablishment group planning a mass prison escape. After a brief meeting with Shiro, he stands at a crossroads, but Nagi persuades him to take part in the escape. However, a traitor has already leaked the plan to the Undertakers, a unit specially formed to stamp out the rebels.