The nation of Norway was on the verge of declaring a state of emergency, thanks to Justin Bieber.
Chaos broke out after the teen idol told fans he was giving a free concert.
Bieber tweeted: "At 920 2nite Im going to do a free show 4 u the fans at the opera house here in Oslo."
After the concert, Bieber escaped by water, hopping aboard a boat to flee the frenzy.
He personally shot a video of screaming fans following in their little speed boats.
"The fans followed us in a new way" he wrote.