Finding Song from Video Description - Girl + Inhaler = Knight
 

Hello!
I'm searching the title of a music video that I saw some time ago.

There was a boy at a party, who's so drunk he falls asleep, and then the view shifts: we see a girl (probably his girlfriend), away from the party. She uses her inhaler, and she turns into a knight to go and save him. I remember her fighting her way through a throng of partygoers with her shield, bumping things along the way, until she manages to find the boy, asleep on a table, and carry him out of the house in her arms.

I think it was pop/electro. I have no idea of the date, but must be recent. I think the singer was male, but I'm not sure, and I can't remember any of the lyrics!

Thanks for your help!