The protagnoist is running out of marketing ideas in his job and about to get fired unless he come up with a new idea. He's taking an extended lunch break, instead of escaping from chaos of work. Unintentionally, our human nature to label, scrutinise, and conditioning (from ourselves or not) to stereotype people(a.k.a consumers) in the park end him up in the centre of it all somehow (of course, with a help of a minor and random antagonist that became the catalyst for his epiphany), from the encounters of seemingly random yet crucial target markets. The moral pressure he unintentionally learn as well as his work pressure weirdly enough gave him an awakening/revelation about the society, making him see beyond just consumers (stereotypes), but rather more as for what they are "human beings", a double edged epiphany (marketing and morality).