Wisconsin Statutes Civil Procedure (Ch. 799 to 847) § 843.03. Complaint, what to allege

The complaint shall describe the property, allege the plaintiff's interest in the property, allege the plaintiff's right to possession stating the reasons therefor, state the time at which the plaintiff is entitled to possession, allege that the defendant unlawfully withholds possession, demand possession, and if damages are demanded, state the amount.