Kôichi is a Japanese man living alone in Berlin. He has no job and hardly any friends. One night Kôichi meets Ryota at a bar which is also a sex club. Ryota came to Berlin to visit a German guy whom he had "met" on a dating app. His high hopes for romance (and marriage?) were quickly crushed since the German was only interested in sex, not even letting Ryota stay for the night. That is why Ryota ended up spending the night in the dark room of the sex club. Kôichi for some reason lets Ryota stay at his apartment. They have sex. Ryota goes out almost everyday to get laid by various local men and comes home to Kôichi's. Increasingly caught up with a strange feeling that is akin to but not quite frustration or curiosity (needless to say, it is not even close to love), Kôichi gradually gives himself up to sex with Ryota.

The Advocate for Fagdom unites the puzzle pieces one by one. Testimonies are combined with rare archive images. Art galeries present movie extracts that are succeeded by images shot on location. And the other way round. Writers, film makers, art galeries owners, actors and actresses, photographers, producers, friends and loved ones all join in a game of interpretation, analysis or simple anecdotes. John Waters, Bruce Benderson, Harmony Korine, Gus Van Sant, Richard Kern, Rick Castro and others deliver their impressions, theories and confessions. Everything blends into the fascinating portrait of a singular person blessed with singular talents. A complex personality at war not with a system but all systems. The portrait of a man constantly moving between his punk attitude and extreme sensibility.