Mayura finds that her mystery club has fallen a little short for recruiting, so she gives a tour of the school's mysteries in an attempt to gain more members. Unfortunately Loki is dragged along, but amuses himself by disproving all the so-called "mysteries" that Mayura shows him. All but one, that is.
The Enjanku Detective Agency takes on a case of angry birds. Upon going to the zoo to investigate, they are greeted by a hawk, that gives Loki a clue to who is behind the birds' erratic behavior. That night, the bird's keeper is brainwashed into kidnapping Mayura in order to lure Loki out into opening.
Both Mayura and her Father are having a hard time dealing with the loss of Mayura's Mother and her inability to accept death. Loki "persuades" Papa to let Mayura continue work by giving him an exhibition. After Mayura completely wreaks Loki's attempts, he sends both Mayura and her Father into their memories.
Incidents of stealing from a thief named Frey are all over the news. Loki is not interested until hearing about the ring of Brisings and sets off for the crime scene.
A mysterious young girl named Reiya shows up on Loki's doorstep asking for help. She claims that, at night, the furniture has been moving on its own and she's been hearing footsteps.
Reiya is the Freya, the sister of Frey and Goddess of love and fertility. She is awakened by Heimdall; thus turning into her full adult form who is in love with Loki. Because Loki does not return the love, she is angry and attempts to kill him.
After witnessing a crime, Loki is abducted and held against his will by two thugs. He decides to put his life in the hands of Mayura and Yamino by making his whereabouts a mystery for the two to solve.
If Mayura doesn't find a way to get a passing grade in her class, she'll end up having to stay after school to study; which means: no more mysteries! While she and Narugami are studying they see a wishing tree growing from a gem dropped by Frey. Suddenly, Mayura gets an idea that will help her pass the tests - get one of the leaves from the wishing tree!
Loki, Yamino, and Mayura find an excellent coffee house that has mysteriously become vacant. The group makes an effort to make it popular again, but just when they do, strange things start happening again.
Mayura finds out that if she doesn't get more members for her Mystery Club, it's going to be shut down. The director feels her club is a waste of time and money as she hasn't even found one single true mystery. Mayura mentions this to Frey, and he's more than eager to help. But when he starts to dip into Heimdall's stash of magic 'tricks' to conjure up a mystery for the director, it doesn't take a genius to know that things are going to get messy.
Mayura tries out a brand-new video game called Dracula's Castle and gets trapped inside. It' is up to Loki to complete each level of the game in order to rescue her and the others.
A relaxing day shopping with Reiya turns hectic when Loki realizes that Reiya can turn into her full form, Freya, without the help of the Breising necklace. Back home, Yamino finds a strange flower in the hallway, and weird things begin to happen.
Mayura finally decides to get the one thing she's sure will help transform her into the ultimate mystery solver; a dog. When she sets out to find one, a puppy literally falls out of the blue at her feet. But this black pup probably won't be sniffing out criminals any time soon or will he?
A new fortune-telling trio comes to town, and Mayura is excited. She attempts to drag the group along, even showing them a poster she found about the fortune tellers, but in the end she heads out alone.
When Yamino, Mayura and Narugami go on a competitive cooking show, they discover that the opposing team is Frey, Heimdall, and Gullinbursti. And Skuld is the show's announcer! Now Yamino and Loki must defeat the Norns and win the competition!
A spell is cast on Loki when he investigates a mysterious house, and now he is taking on other people's personalities. Yamino tries to help Loki but the Norns attack.
The Norns decide to use Freya to get to Loki. Skuld is the next Norn to plot Loki's death, but can she really kill him? What is the significance of the red shoes?
Odin gives Heimdall a gift of a powerful eye. Heimdall then sets out to destroy Loki unless he returns Heimdall's right eye. Heimdall is full of hatred and sets out to use the power of the eye beyond it's limits.
When Hel kidnaps Yamino, Ecchan and Fenrir, Loki is forced into action. He and the goddess of the underworld embark on a strange journey on a train car; but will it end victoriously for Loki or will he perish in Hel's flames?
Assassins have stopped attacking Loki and now he is free to return to the world of the gods. The only thing stopping him is Mayura. Can he bear to return to the world of the gods and leave her?
