Penny and Sheldon discuss ways to improve Penny's business. Among other things, the way in which Penny markets her products is discussed, along with who she should be marketing the products towards.
Marcus visits an NYC bagel deli that is looking to expand. He offers advice on how they can reuse other food scraps to make a new product. He invests in the company and shows the husband and wife duo how to market themselves and drive up sales.
The Profit visits a small business salsa company. He views their packaging and gives feedback on the business model. Marcus is interested in the investments made and where the money goes.
Quantum dots are nano sized crystals. They are used in display screens because they are able to emit lights of different colors. Researchers are looking to use these dots to create a new type of solar cell.