Drafted to shoot a new film, Tadashi Kobayashi, a director with festival marketability, is strong-armed by the studio into hiring two famous actresses as leads. The cast of self-unaware weirdos that constitute the budding players become increasingly overwhelmed and emboldened until they stage their own micro-revolution.

The gears of fate set in motion by the death of a young friend in their youth. A composer, tormented by the intertwining of love and friendship, struggles to find the 'Promise Sonata.'

"Colleagues who started at the same time as you" - something that seems special but is actually known by many people. A bond that is neither friendship nor romantic love, but trust. A coming-of-age work movie set in Fukuoka, filled with tears, hardships, and conflicts as rookie office workers!