Jacob Houston, invited is girlfriend Elise Turnbull to see an opera performance at Melbourne’s Eltham Little Theatre. When they arrived an usher took their tickets and walked them to their seats. However there was no one else sitting in the audience. After a couple of minutes, Jacob said hang on, "I'm going to go see if there was a mistake on time or something". He walked off to find someone while Elise sat in her seat.
A moment later the curtain opens. There's a secret camera set up on Elise who was just looking at her phone while Jacob went to search for help. But when she looks on stage she sees 2 of her friends in costumes begin the "play" which is actually a musical recreation of one of her favorite shows "It's Always Sunny In Philadelphia" the episode "The Nightman Cometh". Eventually there's 4 friends in the performance which Jacob had recruited and secretly rehearsed for several weeks.
The camera reveals not only Elise's initial shock at seeing her friends on stage but how much she is enjoying this performance. Near the end of the first scene Jacob appears in costume on stage and she begins to become very emotional as she now understands what is happening. In character Jacob invites Elise on stage, drops to a knee and opens a ring box to sing his proposal to her.
Overwhelmed with emotion she she hugs him while yelling yes, yes, yes!