 The play was, like many of Kennedy's plays, not aligned with the Black Arts movement, with a focus on dislocation and femaleness rather than the ideology of blackness.Like many of Kennedy's plays, "A Rat's Mass" doesn't follow a standard chronological plot.It follows Kay and Blake (Sister Rat and Brother Rat), black siblings who commit a sexual act on the playground at the insistence of Rosemary, a white child who Blake loves.