This article investigates the unsteady flow of a viscous fluid over a magnetized moving plate emerging from a moving slot. This new family of unsteady boundary layer flow behaves similar to stretching and shrinking sheet problems depending upon the motion of the slot. The governing partial differential equations are reduced to correct similar form using the Blasius-Rayleigh-Stokes variable. Effects of moving slot and magnetic field on important physical quantities are examined. An interesting observation was the influence of magnetic field on the existence of dual solution for the range of moving slot parameter.