Sakata Ginpachi, Class 3-Z’s eccentric homeroom teacher, tries to guide his equally eccentric students!

The students of class 3-Z start doing a general cleaning of the school.

Takasugi Shinsuke is back after a long suspension. But he doesn’t seem to be the biggest problem…

Late at night, Shinpachi goes back to school for something forgotten and runs into Kagura and Ginpachi. Shinpachi recalls the “Seven wonders”. Ginpachi laughs it off, but suddenly a mysterious voice echoes from the empty room.

Principal Hata challenges their teacher Ginpachi to have every student score over 80 in a test otherwise the class faces remedial lessons and Ginpachi gets a pay cut. Ginpachi and his students decide to do a cheating plan.

Ginpachi arrives at his class and sees that his students change based on what he says.

When a diver mysteriously drowns, Arch and Fitz are drawn into a world of shipwrecks and plundering, leading them to wonder if the infamous waterway Mouth of Hell has claimed yet another victim.

A world-famous violinist and convicted predator dies while performing at his father’s funeral, propelling Fitz and Arch into a search for his killer among mourners and those protesting his presence.

Our coroner Natasha is at the heart of the inquiry into her brother’s recent murder. Arch and Fitz question how the man, who was reported dead over a year ago, re-appeared.

When a man is found brutally murdered, Arch and Fitz suspect it is the work of “The Abstract Killer”, a serial killer who plagued Saint-Pierre long ago and was believed to be dead.