Oh, Brook, you're alive! After you blacked out, Zeus was covered in a wall of water, and the only way out was to give the mortals back their water.
Brook walked into the room that had been getting guarded by a sphinx. She found the stolen water sitting on a table. Even though she thought that it was way too easy, she went into the room and tried to take the water. Zeus was alarmed and came right away.
Brook was going head to head with Zeus. She started to say something but was attacked by a lightning bolt that Zeus sent. She crumbled onto the ground. Zeus struck again, this time much more powerful. Brook did all she could. She raised her hand in Zeus's direction and blacked out.
Brook woke up and found Hera (her mom) standing there. She said that Brook surrounded Zeus in water and the way he could get out was giving mortals back their water, which he did.
Brook returned to her office in Mount Olympus and looked out at the happy mortals that got to play at the beach again.
And Brook lived on immortally after that battle with Zeus made her completely imortal. Brook lived on happily as a god in Mount Olympus.