An advertising executive goes literally mad trying to sell 'the good life' to the world at large, even as his son plunges deeper and deeper into depression. The title character, who calls himself only 'Mister Happy Maker' has recently quit his job with an advertising company to setup his own. The trigger for this break was a public protest against an ad campaign for a luxury district, which he had designed. The success of this protest, which sprang from religious beliefs, changed something deep within Mister Happy Maker. Happy Maker is now his own advertiser- in every sense. His method is to advertise, not "at the behest of clients", but "by the movements of his soul", and the subject-matter of his advertisement is himself- his own way of life- wealthy, 'cultured', English-speaking, atheistic, et al. In this endeavour, aimed at showing the whole of the country the path to happiness, he is aided by his wife, whose personal lunacy is an obsession with charity, and a pair of young employees, the boy unhinged by his ambition and the girl unhinged by her thoughtless obedience.
Meanwhile, Mister Happy Maker's son, Alok, is struggling to find a deeper meaning to his life, for values that go beyond the superficial- perhaps for some kind of faith. His parents are afraid that their happy-making is not convincing their own son. He is afraid that it is convincing everybody else. As the play unfolds, we see whose fears are justified.