Gaby is told that her reward for winning the games series is to have a nice relaxing wank.
So she strips off her bikini bottoms and both girls lose their caps and sunglasses too, and are totally naked. Gaby gets in the pool and begins her wank... but Lily can't help pouring freezing cold milk all over Gaby while she wanks. Still, it doesn't put Gaby off and she gets to climax.
Then the 2 girls get into a playful argument about who gets to close the scene. When Lily tries to do it, Gaby gets up and pours a bucket of slime over Lily. Then when Gaby tries to close the show, Lily gets revenge.