When an entrepreneur has identified a potential business opportunity the next step is developing a business plan for the new venture. What exactly should the new plan contain? How can the entrepreneur ensure it has the substance to find interest among would-be investors? In this installment of a series of podcasts for the Wharton-CERT Business Plan Competition Wharton management professor Ian MacMillan explains that business plans must contain several crucial elements: They must articulate a market need; identify products or services to fill that need; assess the resources required to produce those products or services; address the risks involved in the venture; and estimate the potential revenues and profits.