The Guy Who Didn't Like Musicals
A group of singing "zombie/aliens" addresses the audience, setting the scene in the small town of Hatchetfield and introducing the eponymous "Guy Who Didn't Like Musicals", unremarkable everyman Paul Matthews ("The Guy Who Didn't Like Musicals"). Paul works at an office with his coworkers Bill, Charlotte, and Ted. Bill invites Paul to a production of Mamma Mia! at the local Starlight Theater in downtown Hatchetfield, but Paul declines based on his distaste for musicals. He heads to the local coffee shop, Beanie's, to see Emma Perkins, a barista he has a crush on. As he leaves the shop, Paul is hounded by a Greenpeace advocate about donating to save the planet. During their argument, an approaching storm forces them to take shelter as an explosion can be heard. The next day, Paul encounters a group of people singing and dancing led by the Greenpeace advocate from the day before ("La Dee Dah Dah Day"). Paul heads to work and Bill recounts that a strange meteor struck the Starlight Theater during the previous night's performance of Mamma Mia!. Their boss, Mr. Davidson, calls Paul into his office, where he sings an "I Want" song at him. ("What Do You Want, Paul?"). Paul rushes to Beanie's and tells Emma that he fears the world is becoming a musical. Emma, unconvinced, is called by her coworkers Nora and Zoey to perform their new Beanie's tip song ("Cup of Roasted Coffee"). Nora and Zoey continue singing and dancing after the song is supposed to end, and the shop's customers join the baristas in song after drinking coffee contaminated with a mysterious blue substance ("Cup of Poisoned Coffee"). Paul and Emma flee the shop and head into an alleyway where they find Paul's coworkers, who tell them that the entire town has started to behave the same way. Charlotte calls her husband Sam for help, but he has already been infected. Sam and two other police officers attack the group ("Show Me Your Hands") until Ted hits him over the head, knocking him out and exposing his brain, which is bright blue. Emma proposes that they seek help from her eccentric biology teacher Professor Hidgens. They follow her and take the unconscious Sam with them. The group arrives at Hidgens' fortified home on the edge of town. Hidgens believes that the behavior of the townsfolk is the result of an alien invasion brought to Earth by the meteor, and restrains Sam. Hidgens leads Paul, Emma, and Bill to get drinks, leaving Charlotte and Ted with Sam. They argue, and as Ted leaves, Sam wakes up. He convinces Charlotte to untie him with a love song ("You Tied Up My Heart"), then kills and infects her. Meanwhile, Emma and Paul grow closer, and they discover that Paul's hatred of musicals was inspired by seeing Emma perform in Brigadoon in high school. Emma tells Paul that she hates living in Hatchetfield and left after graduating high school, but returned due to the death of her sister. Their conversation is interrupted when Sam and Charlotte enter and attack the group ("Join Us (And Die)"). Hidgens shoots and kills them both with a shotgun. Bill receives a call from his daughter Alice, saying that she is trapped in the choir room at Hatchetfield High School. Paul goes with Bill to rescue her. Paul and Bill search for Alice at Hatchetfield High. They find her and her girlfriend Deb already infected, and Alice tells Bill that she blames him for her death and has always resented him ("Not Your Seed"). The infected group kills Bill, then corners Paul, determined to make him suffer for his defiance. Before they can kill him, the Army arrives and fends off the group, before knocking Paul unconscious. Paul wakes up and is greeted by General John MacNamara, who leads a special unit of the US Army that deals with the strange and paranormal, called PEIP. MacNamara has been ordered to kill any survivors, but tells Paul that if he can rescue Emma, they are both welcome to join PEIP on the rescue helicopter. Meanwhile, at Hidgens' compound, Hidgens determines that the aliens are a hive mind that communicates through music. Emma theorizes that the meteor acts as the hive's central brain and that destroying it would end the invasion, but Hidgens has decided to embrace the hive's unity as a method to achieve world peace, and so sedates her to avoid her idea getting out. Emma wakes up tied to a chair alongside Ted as Hidgens deactivates his house's defences and reveals his hidden passion for musical theatre. Intending to draw the hive's attention, he performs the opening number of his self-penned musical Workin' Boys, glorifying his college undergrad experience (“Show Stoppin' Number”). The zombies arrive and join in the performance, and Hidgens, caught up in the song, believes them to be his old college friends, allowing them to disembowel and infect him. Paul arrives to rescue Emma and Ted and they head for the pickup site, but one of the infected attacks Paul. Ted abandons the others and continues to the pickup site alone. There he finds the army waiting, but is shot and assimilated by an infected General MacNamara ("America Is Great Again"). Paul and Emma manage to escape to the helicopter, but the pilot reveals herself to be Zoey, Emma's infected coworker. Zoey attempts to shoot them, but Paul kicks away the gun, causing the helicopter to crash and severely injure Emma. She tells Paul to leave her and destroy the meteor to end the invasion. Paul arms himself with grenades from the helicopter and leaves. Paul enters the collapsed Starlight Theater and is confronted by a group of the infected. They encourage Paul to express his feelings through song. His proximity to the meteor begins to infect him, and he fights for control over the musical virus, eventually managing to pull the pin on a grenade and throw it at the meteor ("Let It Out"). Two weeks later, Emma is recovering in a hospital in Clivesdale and is placed in witness protection with the help of PEIP. She is told there are no other survivors, but she will be escorted to her new life by someone she knows. Paul enters, and the two reunite, before Paul begins to sing, infected by the virus. He and the rest of the infected implore her to join the hive ("Inevitable"). As the cast take their bows at the end of the show, Emma realizes she is trapped on stage in a musical and cannot escape. She cries and begs the audience for help until the cast drag her backstage at the end of the curtain call.