The classical marketing plan would follow the following scheme: Declaring the mission: this is the planning stage when we establish the organizational orientations and intentions, thus providing a sense of direction. In most cases, this is a general presentation of the company's intentions and almost has a philosophic character.
When I ask entrepreneurs and small business owners, it is not unusual for not having any marketing plan. I once read that Sir Richard Branson never had any marketing plan when he started the 1st Virgin business many years ago. In fact in one study of entrepreneurship (I couldn't recall the name of the study) was that as much as 50% of entrepreneurs and business owners don't have a business plan and marketing plan when they first started the business.