We Need a Tool is a story mission in the video game, "South Park: The Fractured But Whole".
Plot details follow.
Head back to the Coon Lair and speak with the Coon Friends.
In order to get past it, you'll have to cash in on Toolshed's offer to help, as he's the only one who can get rid of the lava surrounding the facility.
After the meeting, head home to start Under Covers.