Episode 4 - build up of army burning the dead, reflection on the great war, repairing and rebuilding the North-Dany alliance. Dragons injured etc.
Perhaps some unification with the Yara led Iron Islands.
Some showings in King's Landing. Cersei looking like she is in control, Euron plotting. Some contraption from Qyburn as an equaliser.
Episode 5 - Battle episode. King Landing falls at great cost. Cleganebowl. Sandor kills Gregor. Arya kills Sandor (mercy killing). Some massive twist at the end.
Episode 6 - Resolution of twist and a last confrontation of sorts between whoever is left standing.
Dany in a rage unleashes fire on the Red Keep. But, doesn't manage to kill Cersei (Jaimie does that later). Instead, Cersei's would be assassin, Arya, is caught in the dragonfire and burnt to a crisp. This convinces Jon that Dany is not a great leader and he presses his claim to the throne with some 'gentle prodding' from Vaserys.
Arya is such a bad arse only a dragon can take her out.