Press-Switch is a visual novel that follows an innocuous high school boy by the name of Calvin Hintre, whose life changes dramatically when he finds finds himself in possession of a device known as the DSM. An enigmatic doohickey capable of body swapping, mind control, transformation, possession, gender bending, and more. This naturally opens up a vast array of opportunities to Calvin, allowing him to turn his relatively humdrum life into something far more exciting… and potentially devastating.

The game follows the viewpoint of Calvin Hintre, a junior in high school who, by sheer luck, stumbles over a device capable of performing many reality defying actions. Intrigued by the concept, Calvin and his choices pave the way on how he will use the device, who he will use them on or with and the results of his or their actions. Will it all lead to decipher the many questions that would once be forever unanswered or will he simply fall into the depths of his carnal desires? The result is up to the player.