[In a dark room with the curtains drawn, children crouch half-hidden behind various articles of furniture. The children shift uncomfortably, trying not to make noise. A boy beneath a table piled high with wrapped gifts sneezes, and a ripple of insistent “Shhs” sounds through the room. JILLIAN makes a nervous gesture and continues watching out the window. Suddenly, she drops to the floor behind a large plant.] 
JILLIAN: [whispering loudly] Trevor’s here! Nobody move or make a sound until he comes in and hits the lights!

Based on the setting described in the stage directions, what event is probably about to happen?

a sleepover

a club meeting

a movie night

a surprise party