舞(ぶ)台(たい) butaiは waシカゴ shikagoに ni変(か)わ()っ()た() kawatta。 The scene changed to Chicago. Literal Stage [topic-は] Chicago [to-に] changed. 舞台 here means 'scene' or 'setting' in the theatrical/narrative sense — where the story takes place. 変わる is intransitive (the scene changes itself). entertainmentstories and narrative
舞(ぶ)台(たい) butaiは waシカゴ shikagoに ni変(か)わ()っ()た() kawatta。 The scene changed to Chicago. Literal Stage [topic-は] Chicago [to-に] changed. 舞台 here means 'scene' or 'setting' in the theatrical/narrative sense — where the story takes place. 変わる is intransitive (the scene changes itself). entertainmentstories and narrative