An Oakland widower's thirst for justice is rekindled when a local killing is oddly similar to his wife's unsolved murder from decades ago.

Traumatized by his recent divorce, lovelorn Stanley takes off cross country to San Francisco, landing at his enterprising sister Nancy's doorstep. Nancy, who makes counterculture cinema-themed t-shirts, lives in "Camille's Castle," a frozen-in-time legacy home for displaced artists and outcasts. Together, they search for the remaining scraps of San Francisco's Summer of Love, and wind up at odds with each other. Countercurrents is an aggressive tribute to the counterculture films of the late 60's, with "easter eggs" in no short supply.