What makes a great mechanic tick? Meet Miss Emma Booton, a ‘humble wrench’ who builds, restores and fixes some of the Bay Area’s most special motorcycles. What begins as an inside look at life in the back of the shop becomes an expansive conversation about the role of machines in motorcycle culture… and a profile of someone who’s dedicated her life to keeping our love for them burning. An affectionate look at ourselves in the mirror of the people who do this work, and proof that keeping our bikes running and our hearts aflame can often be the same job.