As in indoor volleyball, the object of the game is to send the ball over the net and to ground it on the opponent's court, and to prevent the same effort by the opponent. A team is allowed up to three touches to return the ball across the net. The ball is put in play with a serve — a hit by the server from behind the rear court boundary over the net to the opponents. The rally continues until the ball is grounded on the playing court, goes "out", or is not returned properly.[1][2]