Sissy Dreams: Sally's Evening Out

My mistress said we were going to see Danielle (my ‘lesbian girlfriend’) and her mistress, Paula, that evening! I could give her her monthly orgasm!
But why would my mistress want me to dress as a sexy French maid? Would Danielle have to as well?
Unknown to me our mistresses had invited two men as well. What were Danielle and I expected to do with them?
As it turned out Danielle needed me to give her more than just an orgasm.