在这部麻雀放浪记2020剧情/科幻片中,改编自阿佐田哲也的小说《麻雀放浪记》，该小说曾由导演和田诚拍成电影版，片中主人公由真田广之饰演。此次翻拍新版，故事时间背景由日本战败后改为2020人口减少、劳动者被AI所取代、街上满是失业者和老人、东京奥运会被中止这一未来设定。
Boyatetsu is from 1945, but travels forward to the year 2020. He finds himself in a Tokyo where Japanese are having less children and the population is in decline. There is also actual problems like unemployment. He is surprised, bewilders and wants to gather his wits together again and play mahjong.
《麻雀放浪记2020》随记。麻将在日本到底有多受欢迎？。讽刺，讽刺，全都是讽刺。
