The follow-up to Hank's Guide to Coping with Time Travel finds Hank, Audrey, and Sweeney in a broken reality...and they still haven't made it home. It's a road trip back like no other; traveling through multiple time periods and trying to not shatter the universe any further. Soon they learn that some accepted rules of time travel have to be broken. (Also, is grand theft auto really that bad?)

Even when they reach home, new problems arise from the never-ending thread that is pulled once you start screwing around with history.