Change, they say, is inevitable but if you’re a time-traveler, change can be catastrophic.

Sean Kelly is thrilled when his multiple-great grandson gives him the opportunity to hang out with his own teenage dad and his far out friends in 1969. (Although the sleepy town of Mercer, Iowa is a far cry from Haight-Ashbury.)

The local oldsters aren’t hip to the younger generation’s long hair and wild music, especially the town cop, causing Sean to experience some unexpected culture clash.

Time Travel rules get tested when Sean develops feelings for his dad’s groovy gal-pal, and he faces a life-or-death decision that could have huge repercussions when he returns to 1995.

Will Sean’s ever-logical descendant regret bringing him into Jonathan Kelly’s wannabe flower-child world, or will Peace, Love, and Understanding prevail in the end?