Edward, a young expat gay man, finds himself caged in a glass box, after being abducted by the least person he could ever imagine: his own sister Helen. In order to be freed, he will need to be able to trick Helen, a deeply disturbed yet cunning woman, willing to go to great lengths to cure the young man from his birth nature.

In three different time periods, we follow the relationship between three friends — Sara, Manuel and João — whom life has separated and now reunited under adverse circumstances