Watch Dragons' Den - Season 20 Episode 1 HD Full Free on SolarMovie. Watch Dragons' Den - Season 20 tv series online free. Budding entrepreneurs, inventors, and small businessmen (and -women) pitch their ideas to the five "...Budding entrepreneurs, inventors, and small businessmen (and -women) pitch their ideas to the five "dragons"--real-life business leaders and millionaires, with real cash to invest in the companies they feel will make it. Each 'contestant' must convince the 'dragons' to part with thousands of pounds to make their dreams a reality.