Davos’s ship Black Betha is in the second line on the right as Stannis’s great fleet enters Blackwater Bay. He sees that the city defenders have few enough ships, but the shore is well fortified, and dozens of catapults and archers line the walls of the cities. Davos is glad to know that Stannis sent Melisandre back to Dragonstone, because the king feared the commonfolk would say it was the sorceress who won the battle.
As they pass two winch towers on either side of the headwaters of the channel entering the Blackwater Rush, Davos fears a chain boom, which he sees exists, but it is not raised. The old sailor is curious, but there is little time to consider what it means. Fighting breaks out, and despite his inexperience, Ser Imry Florent’s battle plans seem to be working well, until the barge with the wildfire in it explodes. The channel turns into a ruin of hundreds of ships, many burning from the unquenchable green liquid. Davos goes overboard as hundreds of both men on both sides die screaming in the green blaze. As the mass of ships and debris begin to float back out to sea and Davos hopes he can reach the open sea, he sees the great chain boom raised closing off the Blackwater Rush!

Tyrion, with Ser Balon Swann and Ser Mandon Moore at his side, is cutting through Stannis’s forces. He is confused to see such a large force of men to the west, seemingly fighting Stannis’s men, and can’t figure out where they came from. But he has little time to consider it, as he sees hundreds of Stannis’s troops crossing the Blackwater by using the half-sunk ships as a bridge. Racing onto the boats, Tyrion’s men are overwhelmed, and he goes over the edge of a gunwale, clinging for his life. Ser Mandon Moore appears and tells Tyrion to take his hand, his left hand. As Tyrion reaches for his hand, he instinctively withdraws as Ser Mandon’s sword slices into his face. Tyrion, grievously wounded, watches as Podrick Payne saves his life by killing Ser Mandon Moore.