It was planned that six cases (being Stinger Flynn, Banban, Banbaleena, Captain Fiddles, Opila Bird, and Jumbo Josh)[1] would be present on Bring a Friend Day, but many were behind in development, with the only cases ready for presentation being Case 12G (Captain Fiddles) and Case 13 (Stinger Flynn). Despite this, the six chosen cases were brought to the Outer Sector to be presented to the children, their friends, parents, workers, and the company owners. During this time, the cases present acted as they were supposed to. Uthman Adam and Weverly Mason were inside of the facility during the event, but planned to sneak out and board a flight to Madrid, Spain as they suspected that the Ball Pit was likely to collapse under the weight of the children on it.[2] Sooner than expected, the Ball Pit collapsed under the weight, killing the children in the ball pit, and setting off a chain reaction that would destroy the facility.
Zolphius awakened in the abyss, Banban transformed into his Hellish form, and the animalistic instincts of the rest of the mascots were triggered causing them to break out of their cells and to go on a murderous rampage after the children, workers, and parents.[3][4] It also caused something dangerous to escape deep on level -4 of the kindergarten, as mentioned by one worker left on floor -4 in the Employee Training Sector. [5] Queen Bouncelia and Sheriff Toadster also heard the screams, and Sheriff Toadster witnessed some of the chaos above, making him believe his friends had gone mad and thus labelled them as criminals. A surgery in the Arboreal/Aquatic Sector was also taking place during Bring a Friend Day, preformed on Nabnaleena with the doctors completing everything except the Givanium injections. However, before they could complete the final steps to bring Nabnaleena to life, they heard the screams from above. Nabnab broke out of his containment, causing the doctors to abort the surgery and eventually suffering an unknown fate.
Stinger Flynn did not participate in the rampage, instead saving the living children from other monsters and taking them and Mason deeper into the facility.[6] Stinger Flynn took the group to a variety of areas, and at one point threw a party to distract the children.[7] A while later, Zolphius appeared and Mason told the children to not talk to him, and at some point after Stinger Flynn left.[8] [9] It is unkown what happened to Uthman Adam.