A plug connector system includes a first plug connector having a shielding sleeve and a second plug connector having a shielding bushing with a plurality of spring elements. The shielding sleeve has an at least partially circumferential bead on an outer side of the shielding sleeve. The shielding sleeve is partially received in the shielding bushing and the at least partially circumferential bead contacts the spring elements when the first plug connector is connected to the second plug connector.