"[2] A later reviewer, Pekka Suorsa from DVD-opas, sees the Wonderman as telling more about our own time squeezed by the "quarter economy" than about the problems of the late 1970s.

[3] Olli Ruusunen (Antti Litja) is a child prodigy who, as the only Finn and the best in his class, has received special training at the Buffalo Institute in the United States.

The training was paid for by director Tuomola's (Martti Pennanen) company, for which Olli has planned a rationalization program after returning to Finland.

In the following days, Olli begins to behave in a completely new, liberated way: he escapes from Tuomola's hands and also rejects the attempts of his colleague Ronkainen (Paavo Piskonen) and the ambitious secretary, economist Tuula Korkeamäki (Tarja-Tuulikki Tarsala), to get him to return to work.

Instead, he meets Anneli (Saara Pakkasvirta), an uncomplicated woman who works as a bartender, in a middle-class beer bar and starts living with her.

One day, Olli finds a landlord in Anneli's apartment (Markku Blomqvist), who for half a year has been waiting in vain for the rent payment "in nature".

While staying at home, Olli learns that the psychiatrist Veijalainen (Jukka Sipilä) who treated him is now mentally ill himself and that his classmates from Buffalo have also lost their minds.