Tokyo MER is dispatched to an area where foreign workers are complaining of unexplained symptoms. It seemed to be a mass food poisoning incident but, for some reason, the scene is occupied by police officers. Kitami tries to transport the injured and the sick over finding out the truth of the incident but Public Security detective Tsukishima appears and detains a patient. Behind this incident is a big government shaking event and Kitami's secret... his blank year...

At a certain hospital, all medical equipment stops due to a power outage! Panic occurs as many patients face death. Kitami and the other MER members are dispatched but Otowa, who now knows the truth of the blank year, rebels. He refuses to obey Kitami's orders and the relationship of trust between MER member's collapses. Meanwhile, a terrifying crisis strikes Kitami who has headed off alone to restore the outdoor generator to save patients.

A carbon dioxing poisoning incident occurs at a foreign embassy. The MER team is dispatched but are unable to enter without permission due to legalities. On the other hand, Governor Akatsuka collapses due to a chronic illness. Kitami and rescue commander Senju head to the rescue in an underground parking lot and get locked up. As time goes by, oxygen diminishes and the patients condition deteriorates. In desperation, they take a dangerous bet to save lives.

Kota, who lost his beloved sister, announces his withdrawal from MER. The governor, Akatsuka, wallows in a comatose state. Otowa decides to dissolve MER. Meanwhile, a series of terrorist bombings done by Tsubaki Elliot burn all over Tokyo. Many are injured, but no one calls to dispatch MER and the ER car is prohibited. The members are in a pinch but, at that time...

The story of the last dispatch of MER.