ULTRASONIC tells the tale of Simon York, an aspiring musician with a beautiful wife and baby on the way. Ruth, Simons wife, is supportive of Simons dream, but their recent financial problems prove to be a strain on them. Simon begins to hear things that Ruth believes is just a result of his stress. Ruths brother Jonas, an eccentric young conspiracy theorist, is the only person that seems to take Simon seriously. Simons ailment leads the two of them into an obsession that spirals out of control and leaves everyone wondering, is it real?