Petit bureaucrat Shimokawaji has summoned debt ridden bar hostess Mayumi to travel back to 1990 in a time travelling device converted from a yellow washing machine. Her mission: to save Japan from impending bankruptcy before the economic bubble bursts. Back in the era of fast cars and excessive spending, Mayumi meets again with a younger Shimokawaji, who sees her as another easy girl! Can this zany pair save Japan from sinking into 800 trillion yen of debt?