the official version from paramount.com on December 11, 2014 When Lou (Rob Corddry) finds himself in trouble, Nick (Craig Robinson) and Jacob (Clark Duke) fire up the hot tub time machine in an attempt to get back to the past. But they inadvertently land in the future with Adam Jr. (Adam Scott). Now they have to alter the future in order to save the past... which is really the present, in the sequel from the same team that brought you the original cult hit.
the official version from paramount.com on February 1, 2014 Story centers on Lou (Rob Corddry) getting into trouble and his friends firing up the hot tub time machine in an attempt to go back to the past — only to land in the future.
an original formulation based on information from hollywoodreporter.com on January 16, 2013 More time traveling fun in a hot tub.
Production History as of December 18, 2013
MGM is in early talks for a sequel to the 2010 comedy.