For more than 20 years, Stoddard (plaintiff) was a tenant farmer, planting wheat crop on Barrett’s farm each fall and renewing his lease annually on January 1. In the fall of 1980, Stoddard planted his crop in the ordinary course. However, Barrett died, and the farm was sold to Shannon (defendant). Shannon chose to not renew Stoddard’s lease, meaning that Stoddard’s lease ended on December 31, 1980. Shannon knew that Stoddard had planted the crop, but the value of the crop had not been a factor in the price Shannon paid for the farm. When the wheat crop was ready, Shannon harvested the crop and sold the wheat. Stoddard brought suit for restitution, claiming that Shannon was unjustly enriched by harvesting the wheat crop. The trial court ruled in Stoddard’s favor, ordering Shannon to reimburse him for his costs of planting that year’s crop. Shannon appealed.