哲明の祖父、戦争のころ来日した韓国人の松江勇吉（劉忠植）。その祖父の最期の言葉は「哲明バカヤロー！」だった…
祖父、そして家族が歩んできた歴史を、孫（在日三世）の視点でたどる笑いと涙の記録。

Tokyo Drifter acts as an ode to Tokyo, with a very simple premise: a musician (Kenta Maeno) wanders around various darkened areas of the city on a rainy night in May with his guitar, singing songs about life, love, and Tokyo itself. Matsue and Maeno together take the city in all its gritty glory and attempt to shine a light on the darkness.