Once they are sealed inside their respective airlocks, Brian begins siphoning out the air. At any time, he tells them, one may press a button to channel the remaining air into the other airlock—saving its occupant from suffocation. The air thins gradually and, at first, the pair resist. In the end, gasping and floundering, they each hit their buttons "simultaneously". Having proven they are a couple in love, Brian is ecstatic. Threatening one lover guarantees control over the other. It childishly whistles 'Here Comes the Bride' as it prepares to land on Planet D.