Henry Quick was a trapper from the Federated Commonwealths. While on a run in 1814, his leg was shattered by a bear. A group of sims rescued him. One of those sims (whom Quick dubbed Martin) had traded with Quick, and saw potential value in keeping the trapper alive to make weapons for them. The rest of the group did so, and over the course of the winter, Quick healed, although there were many times he was on death's door. As his health improved, he made shoes for the sims, as well as hatchets and arrows. He was cared for by a female sim whom he dubbed Sal. After a time, Quick and Sal began to couple. Sal soon became pregnant, a fact that both excited and vexed Quick, as half-breeds were ostracized in human society.

Unfortunately, Quick's presence caused major changes in the social structure of the group. Another male sim, Caesar, wary of Quick, decided to challenge Martin for leadership. The two fought, and Martin killed Caesar. However, one of Caesar's supporters used one of Quick's knives to hamstrung Martin. The rest of the clan realized that Quick's weapons had made the horrible situation worse, and so turned their back on him. Quick, healed enough to travel, sadly left the group and returned to civilization.

However, Quick's feelings about the sims had changed. When he encountered another trapper named James Cartwright, Quick very nearly killed Cartwright when Cartwright admitted to hunting the sims for pleasure.

Quick began the "sim justice movement" after his experiences. His family remained with that movement into the 20th century.