Dangerous Pastimes is a new public event available in the Skyline Valley update in Fallout 76. You must help a scientist restore the power grid by repairing the Lightning Harvester.
Fallout 76: Dangerous Pastimes
In this guide, we'll explain everything you need to do to complete the mission in Fallout 76.
To begin the Dangerous Pastime event, travel to the Thunder Mountain 03 Substation. The power plant is located in the southern portion of the map and can be accessed via the Pip-Boy. Once you reach the plant, interact with the intercom placed in front of the building's entrance to speak to David Shuttleworth.
David Shuffleworth will instruct you to find 40 Harvester parts lying around the plant that need to be installed into the Lightning Harvester. There will be a four minute window in which you have to find them, but if you have a friend with you it can make the process a lot easier.