Freelancers get called when there’s a problem; a pitch, or an assignment that can’t be cracked by staffers. If you’re a freelancer, be aware that some people on staff may think you’re there to swipe opportunities that otherwise might go to them. Tread gently. Don’t grandstand.
Make it clear you have no ambitions except the success of the thing you were hired to work on. You’re not angling for glory or a full-time job. You’re part of the team, not the star.
Fix it, then vanish like the wind.