Arba'a Yamim B'September was released in the year 1997。Arba'a Yamim B'September is also called as O Que É Isso, Companheiro?, Four Da, Four Days in September, Fire dage i september, Cuatro días en septiembre, 4 zile în septembrie, 4 giorni a settembre, 4 dage i september, Quatre jours en septembre。

Fernando, a journalist, and his friend César join terrorist group MR8 in order to fight Brazilian dictatorial regime during the late sixties. Cesare, however, is wounded and captured during a bank hold up. Fernando then decides to kidnap the American ambassador in Brazil and ask for the release of fifteen political prisoners in exchange for his life.

Arba'a Yamim B'September actors and actresses include Alan Arkin, Fernanda Montenegro, Fernanda Torres, Fisher Stevens。