John Rotit leads a fulfilling life with his devoted wife, but within hours, he transforms into a heroin-addicted rock star. Soon after, he becomes something even more menacing. John involuntarily shifts between three parallel existences, fully aware of his presence in each. He is baffled by the cause or reason behind these occurrences, but his sole desire is to make them cease. As his decision-making becomes impaired, John is willing to go to any lengths to halt these transitions and stay in the life where he finds genuine happiness.