Living in a rough part of the city, Shay often found himself in trouble, but was constantly protected by his closest friend, Liam O'Brien.
Later that year, Liam introduced Shay to his Mentor, Achilles Davenport, and inducted him into the Brotherhood not long after.Over the next four years, Shay devoted himself to the Order and the Creed, serving dutifully.In 1752, while on a mission in the North Atlantic, Shay and Liam came across their comrade Louis-Joseph Gaultier, Chevalier de la Vérendrye, who was supposed to meet with smugglers carrying valuable cargo.When the smugglers were intercepted and captured by the Royal Navy, Shay infiltrated the smugglers' camp, eliminated the British guards, and commandeered their ship, a sloop-of-war named the Morrigan.With both artifacts in his possession, Shay and Hope enlisted the aid of Franklin to activate the devices.
After reassembling Franklin's lighting-to-battery assembly, Shay watched as the electrical charge powered the box, projecting a holographic display of the globe with a shimmering light over the site of a First Civilization Temple in Lisbon, Portugal.
After meeting with Chevalier de la Vérendrye and his informant, Le Chasseur, Shay traveled to Mount Vernon, home of a noted Templar, Lawrence Washington, in order to intercept a package.
Having recovered an air rifle from the shipment, Shay infiltrated the grounds of Washington's manor and witnessed a meeting between Lawrence and three other Templars: Samuel Smith, James Wardrop, and Jack Weeks.
Shay would spend the next 16 years searching for the Precursor box, leading him to Versailles, where he killed the Assassin Charles Dorian and reclaimed the artifact in 1776.
Since he reclaimed the artifact, Shay searched for more artifacts and trained both his son and grandson later in life.
Shortly after, Shay and Liam returned to the Davenport Homestead, headquarters of the Colonial Assassins, where they witnessed the arrival of Adéwalé, a member of the Caribbean branch of the Order.