The Bishop and Lady Mae's crumbling marriage threatens to destroy the Greenleaf family, then a two-million dollar IRS tax bill arrives at Calvary, putting the church in danger.
Grace takes Rochelle up on her offer to help start a legal defense fund; Bishop and Lady Mae ask if parishioner Clara Jackson's Powerball winnings can assist with their IRS bill.
The Bishop sends Lady Mae into a tailspin when he surprises her with divorce papers; Grace gives a newspaper interview in Mae's place, while deploying Darius to investigate Rochelle.
Lady Mae visits world-famous Pastor Maxine Patterson and endures the Bishop's final attempt to win her back at a Round Table party; Connie asks if Grace is interested in running Calvary.
The Bishop and Lady Mae make alternate plans after Clara denies them the check for the IRS bill; Grace tends to Sophia when a medical emergency sends her daughter to the hospital.
Maxine Patterson visits Calvary during the same weekend that Lady Mae and the Bishop announce their divorce to the congregation; Grace and Rochelle find a case for their legal defense fund.
Grace questions her involvement in the Coralie Hunter case when the district attorney threatens to reopen her case with Mac; the Bishop and Lady Mae disagree on hosting A Day With Lady Mae at Calvary.
The Bishop struggles to maintain his place within the family after another Zora crisis hits the Greenleafs; Grace attempts to convince Coralie not to take the district attorney's plea deal.
The Bishop wrestles with signing the divorce papers on the weekend of his Silver Jubilee celebration; Grace realizes her father will need help at Calvary when Lady Mae is gone.
Grace discovers Rochelle Cross' true identity with Darius' help. Kerissa welcomes Triumph's new accountant and learns two hundred thousand dollars is missing.
The Greenleafs' IRS issues escalate when the FBI raids both Calvary and Triumph on suspicion of embezzlement; Grace questions her paternity when Aaron tells her that his father, Lionel, died.
Mae preaches beautifully at A Day With Lady Mae as the Bishop fears he may lose Calvary; Grace gets a paternity test with Aaron and works with Jacob to clear their family name.