As the director and producer (really!) sit in the audience, several actors “act badly” at auditioning for them. Not a decent one in the lot, they opt out firstly for the “dandiprat” who seems to them to have considerable professional experience.
There is a deliberate “best of the worst” casting that follows and they get on with the rehearsals with the requisite theatre clichés thrown in.
The problem is that the production proves the point painfully. This never rises above the worst school send-up. The actors never get past or above two-dimensional caricatures. You could hear a pin drop and an audience groan.
This would be decent if you thought that the actors were sending themselves up. They write books about bad acting and we see this here.