'Orient' was a German long-term and wholly tentative plan for the forces in North Africa and the Caucasus to advance and effect a junction in the Middle East (summer 1942).
The plan was never formulated in any great detail, and represented political wishfulness rather than objective military thinking for the massing of German forces in Iran, thereby severing the Allies' overland reinforcement and supply route to the USSR, and the preparation for an eastward advance on India and a possible junction with Japanese forces advancing to the west from Burma.