  This paper deals with the collapse and expansion of relativistic anisotropic
self-gravitating source. The field equations for non-radiating and non-static
plane symmetric anisotropic source have been evaluated. The non-radiating
property of the fluid leads to evaluation of the metric functions. We have
classified the dynamical behavior of gravitational source as expansion and
collapse. The collapse in this case leads to the final stage without the
formation of apparent horizons while such horizons exists in case of spherical
anisotropic source. The matching of interior and exterior regions provides the
continuity of masses over the boundary surface.
