Correction?

Hi, is this grammatically correct?

Gibbs, Ray, Troll & KJ are final year students at an elite boarding school. They call themselves The Muskteers and live by the code that none of them is allowed to have a girlfriend; one girl must be shared by all of them. Things go wrong when the code leads to a mishap where a girl, Tasha, becomes pregnant and nobody is sure who the father is. At the same time, Ray encounters a supernatural force in the school auditorium.