When the slow-burning wave of nausea finally lifts from yet another night of near constant internal screaming, the mind of just another average Ponyville stallion turns to the deeds and transgressions of his past. He can't help but analyze every small decision he has ever made, and it continually drives his mind crazy. Usually, this lasts about as long as his attention span can maintain itself on something through the din of cacophonous white noise that is his thoughts. One day, however, he finds himself faced with thoughts that simply won't let themselves be snuffed out...