William C. Brenner took out a loan from State Bank of Piper City (Bank) (plaintiff) and gave the Bank a security interest in his grain. The security agreement gave the Bank “all of the rights and remedies of a secured party under the Illinois Uniform Commercial Code” (UCC). Brenner defaulted, and the Bank obtained a judgment of $131,083.91. A-Way, Inc. (A-Way) (defendant) stored Brenner’s grain. The Bank served a citation on A-Way to discover Brenner’s assets. A-Way’s ledger sheet listed 5,141.20 bushels in Brenner’s account. The bank mistakenly thought that this was the value of the grain and moved the court to require A-Way to pay $5,141.20 toward its judgment. A-Way did not appear, and the court granted the request. A-Way sold the grain for $11,310.64, sent $5,141.20 to the Bank, and applied the remainder to Brenner’s account. Months later, the Bank discovered the mistake and sued A-Way under Article 9 of the UCC to assert its security interest on the remainder of the grain’s proceeds. The complaint was dismissed on the basis of merger and res judicata. The Bank’s motion to vacate was denied, and the Bank appealed. The appellate court reversed and remanded, and the Illinois Supreme Court granted A-Way’s petition for permission to appeal.