The Search For Minerva Arc (ミネルヴァ探訪編,Mineruva Tanbō-hen?) is the fourth story arc in The Promised Neverland series.
Emma, Ray, and the rest of the kids have left the forest and are now traveling to locate the whereabouts of William Minerva.
This arc starts when Emma, Ray and Mister leave the Paradise Hideout in search of Goldy Pond. After a 4-day journy Emma gets captured by poachers lead by the demon archduke Leuvis.
When the demons start their hunt for children, Emma saves three kids by the names of Theo, Monica, and Jake. After they run away however, Monica and Jake die leaving only the youngest brother Theo alive with a bloody axe. Emma finds Theo alone and he explains what happened.
After that Emma joins with the Goldy Pond Resistance, which mainly comprises of older kids with guns, as well as Adam, the giant who knows Norman's number, and Lucas, a man who only has one arm.
Lucas and Emma go into a secret passage created by Mr. Minerva. It is opened remotely by Mr. Minerva's pen. There they find a broken floating elevator on a golden pond that leads to the human world. They can't ride it however because it is broken. A phone rings where a recording of the real Minerva where he explains the way out, that this was once one of his bases, the promise, and the Seven walls.
Afterwards we get a chapter of explanation of what Norman is up to after he got adopted by the Ratri clan. The new facility is where he is being held where they do experiments on children.
The kids plan to kill all the demons by breaking their masks then shooting their heads. However this is difficult because Demons move at supersonic speeds and can react to bullets almost instantaniously. The other kids are much older, but because Emma is from Gracefield she is targeted the most. Once the demons find out that she is from Gracefield the next day they hunt again earlier than planned.
With the use of ambushes, electricity, and the super pistol, the kids defeat Leuvis and his minions. Afterwards they blow up the place and leave with 50 extra kids who were also being hunted.
Emma had a long talk with Mister about his mental stability. Emma mentioned Norman, who too, wanted to see the human world, but cannot. Mister then remembered his friends, who too, shared the same dreams as them, and realized why he survived.
He was about to warm them about the dangers of Goldy Pond, but Emma was taken by vines to a viallage.
Emma wakes up to a underpopulated village, she soon noticed another human being and chased after her. Meanwhile, mister explains to Ray that Goldy Pond is a top secret hunting grounds for the demons. The music started playing, meaning the demons are coming.
Violet introduces Emma to her comrades who knew the truth just like her. They told her more about the hunting grounds. At the end, their leader, Lucas, Mister's friend, came in and wanted to talk to Emma about William Minerva.
The tables have turned, the hunter is now the hunted. Gillian and Nigel chased Luce and have cornered him. Gillian thought about the irony and soon killed him. Meanwhile, Sandy and Sonya prepare their secret weapon to fight Nous and Nouma.
Nous eats Nouma and have thrown the rebel's plan into disarray due to his unexpected actions. Emma and Leuvis started playing a game from years ago. Meanwhile, Gillian and Nigel encounters Bayon and wonders what happened to Zack and Pepe.
Gillian and Nigel have decided to stay behind and fight Bayon. Their plan goes haywire and Gillian was hit by Bayon's attack. Out of nowhere, Pepe throws a smoke bomb and the three escaped from Bayon's grasp.
After Leuvis stabbed Emma, Ray and the others sought to kill Leuvis to avenge her. Meanwhile, Emma started to have a series of flashbacks and hallucinations as they gave her strength to stand up. With the combine strength of Ray, Mister, Nigel, Violet, and Emma, Leuvis was finally killed with Mister having the killing shot.