To obtain the solution of the problem of a stationary plasma ejection by a magnetized rotating star the 3D non-stationary axially symmetric problem is solved numerically. The solution for a cold non-relativistic plasma ejected by a star having a monopole-like magnetic field is obtained. A search for discontinuities in the solution is performed. It is shown that in the non-relativistic case almost 50 per cent of the Poynting flux can be transformed into the kinetic energy of the plasma. The problem of the stability of the flow is discussed.