Yuuji, Nobara, and Megumi are driven by Asst. Supervisor Nitta Akari (a new face) to Saitama to investigate a string of curse-related deaths involving a malfunctioning automatic door. They arrive at the home of an acquaintance of one the three victims to find they’ve become the fourth victim. With that lead lost, they head to the school all the victims attended.
Nobara is super-excited about beating up a couple punks, who suddenly shrink not in her or Yuuji’s presence, but Megumi’s—turns out he attended the middle school and already beat up all the punks and gang members. A school staff member Takeda arrives and tells the sorcerers that all four victims once bungee-jumped from the Yasohashi Bridge, something of a school custom. Yuuji and Nobara also learn about Megumi has a big sister, Tsukimi.
As Mahito feeds some poor bastard one of the special-grade cursed thingies stolen from Jujutsu High, Yuuji, Nobara and Megumi go to the bridge, but after a nightlong stakeout turns up nothing curse-related, they hit up the konbini for some breakfast, and bump into one of the school delinquents, who has his big sister with him, whom Megumi recognizes is Fujinuma.
It turns out she too went to Yasohashi Bridge one night, and has started to notice the doors of their family’s shop malfunctioning whenever she’s near them. Megumi notes that at least two weeks pass between the four victims first noticing something and their deaths, which means they still have a chance to save Fujinuma, who also tells them that Tsukimi was with them then.
Megumi recedes from the other two to ask Ijichi to have his sister guarded, but the supervisor laments that there’s no one available stronger than second-grade. The only way to deal with the curse affecting the victims both dead and alive is to exorcise it right away, before it activates a cursed technique from within the still living-Fujinuma and Tsukimi.
Naturally, he returns to the bridge alone in order to do this, literally shoving Yuuji and Nobara back into the car with Akari. But they show up beside him anyway, scolding him once again for holding too much back about himself. Megumi doesn’t protest their help, but informs them that the curse won’t appear unless they themselves become potential victims by “crossing over” the river below the bridge, which symbolizes crossing over into the afterlife.
Once they do so, they’re suddenly confronted with a whack-a-mole-like curse emerging from the stone, along with several other orifices from which other curses could emerge. Then the curse unrelated to the bridge, which Mahito had fed to that poor dude, arrives on the scene. Yuuji volunteers to take it on while Megumi and Nobara handle the bridge curse.
It’s hard to believe this week marks the first time ever our three sorcerers worked on a curse case together. While the case that dominates the runtime seems more like the of-the-week type, I didn’t mind because the three young sorcerers are never not fun to watch bounce off each other, while Nitta “Ding-Dong!” Akari made for an entertaining new chaperone.