To complete the Fortnite Season 5 quest, you must head over to one of three locations and find a hidden banner. This will teleport you into an area that has been cleared out by V5. Once in this new zone, continue to the east where youll be able to see your first set of stairs with some fireballs shooting at them from above. Follow these steps down until they end and enter the room on your right hand side. Theres a chest here with another banner within it as well as two weapons waiting for you just outside of it!