Now that Barb had all six strings, she could play the Ultimate Power Chord. She and her crew returned to Volcanic City with Poppy as their prisoner. Inside the Volcano is a large stadium where all the Trolls in Troll Kingdom are. Rock Trolls are cheering and celebrating while the five other Troll tribes are watching on in fear. Above the stage is a small room where two Rock Trolls lead Poppy into with Barb following behind. "So, Popcorn, is being my best friend everything you could have ever dreamed of?" Barb asked.

The two Rock Trolls holding Poppy throw her into a cage, which Barb locks, laughing. The two Rock Trolls leave to get Barb's guitar, so only Barb and Poppy are in the room. "I am not your best friend," Poppy stated.

"You don't have to be embarrassed. I get it. Being queen can be kind of lonely." Barb said, her expression changed to sadness when she looked out at the crowd chanting her name. "There's all this pressure to be a great queen. And instead of real friends, you're just surrounded by people who just tell you what you want to hear."

She then turned to Poppy, "You know, other than your terrible taste in music and clothing and general lifestyle, you and me are the same, Popsqueak."

Poppy scoffs, "No, we're not."

"We're both queens who just want to unite the world," Barb stated.

"You don't want to unite the world. You want to destroy it!" Poppy argued.

But her argument didn't even make Barb change her mind. Two Rock Trolls open Barb's guitar case, revealing her guitar which holds all the Troll music strings in Hard Rock red, all except for the Pop String. Barb took out the Pop Troll music string and attached it to the guitar, turning it into a Rock Troll music string and making the guitar complete and ready to play. Barb then picks up the guitar and runs her hand over the strings, causing it to glow red. The floor Barb is standing on lowers onto the stage, leaving Poppy to fear what Barb is going to do with all of the strings. The stage was a giant skull where Poppy was caged in one of the teeth.

The Rock Trolls cheer and grunt in unison to the rhythm of the song. One of the Hard Rock Trolls jumped into the pool of lava. Barb's outfit was different too when she was on the stage. She wore a white leather rock suit with red flames on the arms to mimic a cape. Barb took a mic and began to sing.

Barb:

So, this ain't the end, I saw you again, today

I had to turn my heart away

Thrash shoots columns of lava out of the ground by pressing buttons on his chair; Riff plays the drums; and Biggie, Guy Diamond, Tiny Diamond, Legsly, Satin, Chenille, and Simidge who were in disguise stand on stage and pretend to play the instruments they were given by the Hard Rock Trolls.

Smiled like the sun, kisses for everyone

And tales, it never fails

You're lying so low into the weeds

I bet you gonna ambush me

You'd have me down, down, down on my knees

Now wouldn't you,

She stopped singing when she looked over expectedly at the small group of Pop Trolls onstage, believing them to be her encore. When they don't sing, she narrows her eyes at them suspiciously. Biggie quickly sprung into action by screaming, "Barracuda!" and then smashing his guitar to the ground, causing Barb to laugh and the Rock Trolls to cheer. Cooper, Prince D, and King Peppy were being led toward the front of the stage by two Rock trolls. Hickory was looking around for any sign of Floyd but no luck. Rock Trolls scream and cheer as Barb holds the guitar containing the former music strings from the other tribes.

Barb then had spotlights shined on each of the tribes' leaders who were standing on pillars. At the mention of the leaders, the Rock Trolls boo, and as Pop was called, Poppy's cage turns around to face the crowd. At the sight of Poppy, King Peppy gasps and looks up at his daughter in fear. Barb pulled out her guitar pick ready to play. "Who wants to see what the ultimate power chord can do?"

Barb aimed her guitar at Poppy so she could use the Ultimate Power Chord on her. Barb plays a few notes on the guitar but before she could play the ultimate power chord, a book was thrown at her face. Throwing the book down in anger, Barb looks around for who threw it and sees Sheila B flying over the Volcano with Branch, Floyd, the K-Pop Gang, and the Reggaeton Trolls inside. "Ha! I guess a giant comprehensive manual does come in handy." Branch said, proudly.

"Well, isn't that puke. Poppy's little boyfriend came to crash the concert. Too late, Branch." Barb stated, aiming the guitar at Poppy again.

Without thinking, Branch leaped out of the hot air balloon just as Barb played the ultimate power chord. But before it hits Poppy, Branch jumps in front of the blast and takes the full blow, protecting Poppy. "No!" Floyd screamed.

When the chord ends Branch gets encased in a large black rock which falls heavily on the stage. Cooper, Prince D, King Peppy, Floyd, and Poppy stare in horror at where the rock fell. All the trolls watch in silence to see what happens. As the rock begins to crack open, Barb cautiously approaches it with a smile on her face. When the rock splits in two, Branch has transformed into a Rock Zombie. Rock Trolls cheer to see the guitar work. Floyd was horrified at what Barb had done. She broke her promise to him. "Oh, sick! It totally works!" Barb said, proudly.

A Hard Rock Troll attaches Barb to some wire that's connected to a vessel, which carries her over the audience as she plays the guitar. She strikes the ultimate power chord again, this time aiming at the Queen and King of Funk. Cooper and Prince D gasp as their parents are turned into rock zombies. One by one, Barb turns the rest of the leaders into rock zombies until only Poppy is left. Poppy picks the lock open to her cage and opens the door, which squeaks and alerts Barb of her escape. Barb turned to Branch, "Hey, boy toy, it's mullet time."

Branch faces Poppy and growls then uses his hair to hold Poppy in place for Barb, who plays the ultimate power chord. But instead of the power chord hitting Poppy, it hit Floyd. He had jumped in the way to stop Barb from turning Poppy from being turned into a Rock Zombie. Now he was turned into a full Rock Zombie. Barb then threw the guitar into Floyd's hands and told him to finish the others off. He approaches Cooper, Prince D, and King Peppy while playing the guitar. As he got in front of them and pointed the end of the guitar at them, He winked and then turned the guitar on Barb, who backed up in confusion.

She saw Floyd's eyes and noticed they were not red as they should be, but their normal color. "What are you doing? You're supposed to be a rock zombie!" Barb shouted in confusion.

Floyd then pulled out two gumdrops from his ears. He used the same trick that Hickory used against Chaz. "Gumdrops. Soundproof and delicious." He stated then popped the gumdrops in his mouth.

"Give me that, Floy-Boy!" Barb ordered.

"No! I'm not gonna let you do this to anyone else!" Floyd argued. "A world where everyone looks the same and sounds the same? That's not harmony. Barb, you didn't care that I was a Pop Troll when I lived here. And I've had your back for so long that you're like a sister to me."

"So?"

"So, a good queen listens. To her friends and her family."

Poppy suddenly took the guitar from Floyd. Floyd tried to stop her, but he was too late. She smashed the guitar to the ground, breaking the strings which causes all the trolls to lose their color as their music gets sucked out of them. The leaders are back to normal, and Branch stands up behind Poppy, grunting as the rest of the zombie effects leave him. Looking down, he looks at his arms and realizes he's turned gray once again. Floyd saw his little brother looking like he was having a panic attack and ran towards him to comfort him. As Floyd comforted his little brother, he glared at Poppy as a sign of telling her that she messed up big time.

Barb kneels beside the guitar and gently picks the strings up in her hands and watches as they disappear. She was breathing heavily then she faced Poppy, "What have you done? You've destroyed music!" Barb shouted, "Give it up, everybody. Thanks to the Queen of Pop, we've all lost our music. History repeats itself. Pop has ruined everything."