The Mediocre Melodies Movie is a comedy horror movie produced by 8bittinkywinky Films, Blue Robbion Content, Blue Ice Pictures, Warner Bros. Pictures, And 20th Centry Fox.

Poster

The poster shows Orville Elephant with purple eyes and a sad expression, Mr Hippo with his half terminator face and endoskeleton arm exposed, Happy Frog with green eyes and a sad expression, Pigpatch holding a blood stained mallet, and Nedd Bear holding a blood stained axe.

The Crying Child is a huge fan of The Mediocre Melodies Show, a successful fanmade kid's series featuring five animatronic characters - Orville Elephant, Mr Hippo, Happy Frog, Pigpatch and Nedd Bear— along with their marionette co-star Security Puppet. As a surprise birthday present, his parents Clara Schmidt and Micheal take him with his step-brother and his little sister Elizabeth Afton to a live taping of the show at Fazbear Entertainment. Upon arrival, the family meet several audience and staff members, including show hostess Paige and her assistant Doug, fan couple Thadd and Poppy, aspiring young performer Parker with her father Jonathan, and security guard Sal.

As the taping is getting ready, the studio's new vice president of programming, Andy, informs show's producer Rebecca that he is cancelling the show after the recording as it does not go with his network's vision. The Mediocre Melodies' new software malfunction after Pigpatch overhears this through a drunken Security Puppet, with Nedd Bear, Orville Elephant and Happy Frog kidnapping Andy while Pigpatch kills Security Puppet by thrusting a prop lollipop down his throat. Outside, Clara learns that Micheal has been cheating on her with another woman. When she returns to the studio, Micheal finds Sal's decapitated corpse and is then chased and run over by Orville Elephant.

Meanwhile, Poppy accepts Thadd's marriage proposal while live streaming the backstage before Mr Hippo arrives and murders Thadd by sawing him in half. Mr Hippo leaves Poppy after he hears Harley and Zoe looking for Orville Elephant and Happy frog, taking them to the workshop. He traps them with Parker, who Nedd Bear kidnapped while Pigpatch burned Jonathan's face as they were searching Andy for an audition. The remaining survivors learn about the Banana Splits' carnage after finding a seriously-injured Jonathan. Paige finds all phones disconnected and the confiscated cell phones destroyed while Beth manages to subdue Nedd Bear before she and Austin find Poppy and convince her to join them.

At the same time, Rebecca and Jonathan are forced to participate in the show's obstacle course until Mr Hippo stabs Jonathan to death in the back with a key while Rebecca completes the course, only for Pigpatch to Beat her to death with a hammer. Harley, Zoe, and Parker meet the Banana Splits' creator Karl, who considers his animatronics' actions justified by the show's cancellation and conflicts over freeing the kids. Pigpatch brings Nedd Bear for repair, causing Karl to get distracted enough for the kids to escape and lock him in the cell. While looking for a way out, Harley, Zoe, and Parker come across Orville Elephant and Happy Frog and convince both of them to help them.

Clara, Austin, Paige, and Poppy arrive at the workshop to ask Karl how to stop The Mediocre Melodies but he does not provide any information. The group hear music coming from a hatch in the floor and go down. However, Poppy notices the mask of an unused sixth animatronic named "El Chip". Losing her sanity, she puts on parts of the costume and kills Karl as revenge for Thadd's death. Finding the underground passage littered with the corpses of Doug, the studio's staff, and the adult audience members, the group find Mr Hippo and Pigpatch holding all children hostage while performing gruesome variants of their acts, like burning Sucurity Puppet's corpse and brutally murdering Andy by ripping his limbs off.

Happy Frog arrives and chains Crying Child, Zoe, and Parker, but secretly gives Crying Child the keys to free them. While Clara and Austin manage to kill both Mr Hippo and Pigpatch, Parker guides all the kids to the exit. Clara, Austin, and Crying Child meet up with Paige and Zoe before being cornered by Nedd Bear. Suddenly, Orville and Happy Frog appear and attack Nedd Bear, killing him before both of them were dying from critical damage sustained during the fight. As the police and paramedics arrive to attend survivors, Austin and Paige start a relationship while Clara punches a heavily-injured Micheal, demanding a divorce. Left behind on the parking lot, Micheal is run over again, this time being killed by a now-insane Poppy with The Mediocre Melodies' remains in the back of the vehicle. While she drives and sings The Mediocre Melodies Theme Song, Mr Hippo reactivates and laughs maniacally.

Deaths:

Orville Elephant - Stabbed In The Chest With An Axe (Caused By Nedd Bear In The Battle of Orville Himself and Happy Frog vs Nedd Bear)

Mr Hippo - Stabbed In the head With a crowbar (caused by austin)

Happy Frog - heart ripped out of her chest (caused by Nedd bear in the battle of happy frog herself and orville elephnt vs nedd bear)

Pigpatch - stabbed with an umbrella stick in the mouth (caused by clara afton)

Nedd Bear - head cracked open (caused by happy frog after nedd bear tore out her heart)

Security puppet - lollipop shoved down the throat by pigpatch