Her Song {A StarCo Fanfiction}

(This is a sequel to The Princesses I Met On The Internet,so please go and read that first or else this story might not make any sense to you!)
All of the characters are aged 18+ in this fanfic)

Star and Sear Butterfly are enjoying their days at Echo Creek High on the mainland, miles and miles away from Mewni and their royal duties, living with their beloved Marco Diaz and his friends, all whilst still competing for his heart.
The atomsphere in the school is the same as it's always been, well that is until Star's parents call her
and Sear back to Mewni...

The princesses said that they would be gone for three days at most, but what happens when Star and Sear are still not by Marco's side in a week's time?
And if that wasn't enough, Tom and Toffee are slinking around Echo Creek High and the Safe Kid can't help but think there is some connection between them and the princesses disappearance.

Are Tom and Toffee the ones behind this?
Did something terrible happen in Mewni?
Does Star still insist on keeping her music career a secret?