The French planned in using their navy to directly strike at mainland Britain, which they would first invade Scotland. The French flagship, Formidable, led the French assault on the British Navy.
Shay and his vessel, the Morrigan, and two British brigs confronted the French fleet that was sent against them. But before they could exchange shots, they were ambushed by several fireships, forcing Shay to use the Morrigan's firepower from almost all directions. After sinking the French ships, the Formidable herself appeared to confront the Morrigan. While British reinforcements will not arrive, Shay fought the Formidable alone. When the French flagship was severely damaged, more fireships arrived to reinforce the Formidable, but despite the assistance, the Formidable was sunk by the Morrigan and the rest of the English fleet fought off the remains of the French fleet, forcing them to abandon their plans in invading the United Kingdom.