After recovering from a gunshot wound to the head, Accelerator's bandages are finally removed; a secret weapon is stolen from a research facility.

A high school girl attempts suicide, but finds herself at the mercy of a fanatical group called the DA. Accelerator becomes involved when a young woman carrying a photo of Last Order is pursued through the hospital.

Accelerator explores the warehouse with Esther and they encounter Hishigata; Accelerator attempts to learn more about DA.

As Accelerator takes on two DA members at the hospital, he receives help from a surprising ally. When DA's hospital mission goes awry, plans are put in place to have them removed form the operation.

Accelerator is sidelined as his Misaka Network electrode recharges, so Antiskill leads a raid on a supplement factory being used as a front for DA. Meanwhile, the members of Scavenger continue their mission to eliminate DA.

Yomikawa fights off the Scavenger's attack to protect Esther, Huotou, and the Sisters clone, and finds out why they are so hostile to the city's teaching staff. Huotou and Esther battle Naru.