Shinjuku, Tokyo's leading entertainment district. From the 1960s to the 1970s, Shinjuku was the center place for the social movement. Now there is an old man called “Shinjuku Tiger” in this town. He always wears a tiger mask and gaudy costumes and walks all over Shinjuku every day. Shinjuku Tiger started to live like this since 1972, when he was 24 years old. And he decided to live as a “Tiger” until he dies. What happened to him in 1972? This film reveals his intention hidden behind the tiger mask.