Bus conductor Tomiko falls in love with driver Niitaka, even though she also suspects him of being a serial killer who killed his female conductors after tiring of them.Bus conductor Tomiko falls in love with driver Niitaka, even though she also suspects him of being a serial killer who killed his female conductors after tiring of them.Bus conductor Tomiko falls in love with driver Niitaka, even though she also suspects him of being a serial killer who killed his female conductors after tiring of them.