Mr. Sprinkles deals with being obsolete.

Katie Puckrik explores the 1970s American music phenomenon of Yacht Rock, a halcyon period of Los Angeles studio craft that married R&B with themes of longing, aspiration and melancholy, before going on to explore how the genre adapted to the musical times of the 1980s.

After an open mic night, JB and KG get a message from Michael Keaton who tells them that the time-space continuum has been disrupted at the Ford's Theater in 1850 and only Tenacious D can fix it.

This documentary chronicles the rise, fall, and rise again of the soft rock epitomized by artists such as Christopher Cross, Michael McDonald, Kenny Loggins, Steely Dan, and Toto in the late 1970s and early 1980s. Retroactively dubbed "Yacht Rock," the easy-listening genre came to be gently mocked and even dismissed by rock lovers and critics. However, it has since reclaimed its place in music history and is celebrated in this groove-infused film.