A.J., Mikkel and Oliver miss their old friend. With Emil's huge success as he is impossible to in touch with. When it's revealed that Emil will move to USA, they have one last chance - finding the golden ticket hidden in a Gunpowder bottle.
Mikkel, Oliver and AJ have scanned more than 1000 Gunpowder bottles without finding the golden ticket. Then they get a tip, but are not alone, and a super-fan gets hold of the bottle.
The girl who got the ticket to meet Emil start in the class. When she decide to gather a band before the meeting Oliver gets an idea: Revive BaseBoys and offer her a spot in the band.
Oliver spots Emil at the Gunpowder headquarter. He tries to convince to stay in Denmark so that all can get back to the way it used to be, however Emil is busy trying to impress Oliver, and promise to bring them with him to the US.
In order to get to perform at Emil's farewell concert, the girls blackmail Fritz Gunpowder. Meanwhile someone have sabotaged the girls bikes. They are convinced that Mathilde is behind.
BaseBoys reunites at the farewell concert for Emil. Fritz ensures them that they'll all go to USA. Emil's new song is not the big hit they expected, and furiously Emil leaves the stage. GoldGirls take over with the song Oliver has written.
To prevent GoldGirls success, BaseBoys tries to get them off the stage, which results in chaos. The audience loves it and the number of viewers on the Gunpowder live stream is higher than ever before, which give Fritz a great idea.
BaseBoys gets a big surprise when they show up at Fritz Powder's office - Gold Girls are there as well. Fritz has decided to make a new competition: Whoever first sells 1 million Gunpowder bottles win the trip to USA.
The first challenge for the bands is to make a new Gunpowder taste. The girls take the lead. Despite some strange side effects BaseBoys miraculously get their Gunpowder ready in time.
It's release party for the new Gunpowder tastes. The side effect of BaseBoys' Gunpowder turn their voices into a high pitch, preventing them from singing, so they desperately try to get the girls to drink their Gunpowder.
GoldGirls are catching up on BaseBoys. In order to get some publicity BaseBoys try to team up with a popular streamer. She agrees to help them only if they can beat her in Fortnite.
Stella has gotten some good traction after performing at the release party. Fritz Powder convince BaseBoys to steal GoldGirls' new song at their fan meeting, only one problem - the meeting is "girls only"
Oliver and A.J. are under cover at the GoldGirls' fan meeting to try to steal their new song. They hide in Clara's room where they hear her and Mathilde discuss that they should let BaseBoys win, so Oliver gets 2nd thoughts.
With GoldGirls new song, BaseBoys records their own version. Oliver still feels guilty, because Mathilde promised that GoldGirls would let them win. Emil don't trust the girls, and gets Oliver convinced to be part of the plan.
Oliver is troubled by a bad conscience after they have destroyed GoldGirls reputation. When the girls won't listen to his attempt to apologize he and A.J. come up with a plan, which can help the girls win the competition.
After their disruption of the GunPowder factory Oliver is convinced the girl will win. However something happens and Oliver realize that something is wrong with the competition.
With Oliver captured by Fritz and the video he managed to sent to Mathilde it's clear to everyone how evil Fritz Powder is. The two bands gather, hoping to reveal what is really happening in GunPowder.
The two bands are not the only one with a plan - Fritz Powder is set to portrait the two bands as criminals to get their fans to turn on them. Mathilde, Hannah and Fru Jakobsen are on their way to free Oliver - but he is not alone.
Just before showtime the friends receive a text from Hannah and Mathilde - but it's too late. Fritz is already ahead, and the bands have to think fast. They manage to buy some time, but will it be enough to stop Fritz?
Gunbear shows up at the concert with Mathilde and Hannah. The audience get a surprise, cause it's not one of Fritz' usual henchmen who is inside the bear. They manage to take down Fritz - but what will happen to Emil's dream of USA?