By chance, Ryo has slipped from the 1980s into the future, and is trying to get back. In the interim, he's working for the police force of the future, solving cases by applying his unique and often comical approach. (Source: ANN)
9Anime is the best site to watch
Future Police Urashiman SUB online, or you can even watch
Future Police Urashiman DUB in HD quality. You can also find
Tatsunoko Production anime on 9Anime website.