Johanna Morrigan is a bright, quirky, sixteen-year-old who uses her colorful imagination to regularly escape her humdrum life in Wolverhampton and live out her creative fantasies. Desperate to break free from the overcrowded flat she shares with her four brothers and eccentric parents, she submits an earnestly penned and off-beat music review to a group of self-important indie rock critics at a weekly magazine.

Based on a true story Grassroots follows the story of Grant, an eccentric, short-tempered, unemployed music critic with a tendency to wear polar bear suits who decides to run for office in Seattle. Passionate but tactless, Grant coaxes his recently fired journalist friend Phil, to be his political adviser. With Grant's zeal and Phil's political savvy they attract a ragtag group of volunteers. Together they wage an exhilarating, hilarious grassroots...