Isuzu, the zodiac Horse, is determined to make change and seeks out Shigure for some answers.

Obi goes over Hibana's research, and learns that the artificially-created Infernals she dissected all had traces of insect DNA in them. Shinra and Arthur's investigation at the 1st continues, and they finally get their first lead on a culprit.

Shinra makes an important discovery about how to fight Charon, but incorporating a new hand form into his fighting style proves difficult. The other Fire Soldiers put into action a novel approach toward putting to rest a demon Infernal.

The members of Company 5 and 8 get together for a cookout, ostensibly to celebrate a successful nighttime training exercise. Using the bylaws of the Special Fire Force, Obi gets Shinra and Arthur temporarily assigned to the 1st to investigate it.

Tohru and her classmates are in Kyoto for their school trip to create some lifelong memories.

Shinra confronts Hibana in an attempt to rescue Iris, and must once again deal with her ability to make his body shut down. The story of Hibana and Iris's youth as orphans, as well as Hibana's rise to prominence, is revealed.

A widespread outbreak of fires stretches the members of Company 8 thin. Shinra tries to keep Charon and his men from taking Inca. With a shortage of ecclesiastical assistance, the crew members cannot put the Infernals to rest fast enough.

While jogging, Shinra inadvertently disturbs Iris's purification rite, and sees that she is troubled. When Iris later turns up missing, the other members of Company 8 rally to Company 5's compound, to which Iris had secretly slipped away.

Tohru takes it upon herself to venture into the Soma Estate where she meets someone unexpected.

A call mistakenly comes in to Company 8 to rescue a dog out of a tree, to which Shinra and Arthur respond. However, when an Infernal suddenly appears at the district courthouse, the two must play catch-up to join the rest of the company.

Obi goes to see the chief with news of a fifth Adolla-Burst bearer. Schoolgirl Inca, who has the ability to sniff out fires before they start, becomes notorious as the Fireground Thief, extorting valuables from victims in exchange for rescuing them.

Shinra and Arthur compete in the Rookie Fire Soldier Games, a contest to test the abilities of each year's newest recruits. However, they are interrupted at the goal by the mysterious man who created explosions at their last fire scene.

Parent-teacher conferences to discuss career plans are underway, triggering various emotions in the students.

Uotani plans a group gift for Tohru. Then, the Somas learn more about Uotani's past.

Shinra is approved to have a meeting with Company 4 Captain Hague, who may be able to provide information on the Evangelist and Adolla Bursts. However, once the meeting starts, nearly everyone involved begins behaving erratically.

Tohru, Yuki, Kyo, Shigure, and Hatori go on a trip to the Soma vacation house near a lake.