Plan “B” Productions, San Francisco’s newest theater company, presents Sister Mary Ignatius Explains It All For You: a racy and hilarious show written by Christopher Durang. Robert Bosco directs this comedy, which is sure to offend devout Catholics, vindicate ex-Catholics, and reinforce Catholic stereotypes for everyone else. No knowledge of Catholic doctrine is necessary to appreciate Durang’s sardonic comic intent as the good sister explains death, sin, heaven, hell, sex and purgatory.