On Thanksgiving, Team Scorpion's new neighbor, Florence, joins them at sea on a mission to destroy a floating island of trash, but her flawed contribution leaves her, Walter and Happy stranded on the quickly dissolving island. Also, Toby works with Cabe to uncover the details of his father's death that he has suppressed since he was a boy.

As Team Scorpion anxiously awaits the verdict of Cabe's trial which could send him to prison, they focus their nervous energy on trying to save a dog stuck in a cistern.