地鐵,這近150年來才發展成形的交通網絡,在地底下重新形塑人們移動與感知城市的經驗。本片走訪紐約、洛杉磯、東京、香港等六個都會的地鐵,鏡頭神秘地梭巡場站與列車各角落,聲軌傳來形形色色的人物訪談,引發令人遐想又未完待續的氛圍;宛如散文的視聽結構,舒緩慧黠地揭開地鐵跟社會生活、文化差異、乃至個人沉思獨處需求間微妙的聯繫。藉著觸摸地鐵空間的肌理,影片重新提問城市的本質。Trains of Thoughts is an audio-visual essay, which reflects upon and compares metro systems around the world. It is an exploration of a world inside the world as well as feelings, fascination, obsession, fear and themes - of survival, control and silence - that revolve it.