Bored with their marriage, the architect Marcelo proposes his wife Ana, a relation to three, with another sexual partner. The woman accepts, but the situation escapes from Marcelo's control because Ana engages lovingly with each other, and Marcelo no longer fits in the triangle proposed.
| Actor | Role |
|---|---|
 Roberto MayaMarcelo | Marcelo |
 Sandra BréaAna | Ana |
 Kate LyraHelen | Helen |
 Aldine MüllerNot listed | Not listed |
 Nicole PuzziNot listed | Not listed |
| MMaria RosaNot listed | Not listed |
| MMara HusemannNot listed | Not listed |
| MMarisa Leite de BarrosNot listed | Not listed |
 Novani NovakoskiNot listed | Not listed |
 Sueli AokiNot listed | Not listed |
 Mii SakiNot listed | Not listed |
| BBárbara ThiréNot listed | Not listed |
 Renato MasterNot listed | Not listed |