Bay Creek Tennis Camp is led by Coach Charlie, a tennis star turned brusque middle-aged coach-and this year, he's signed on Assistant Coach Raegan, a non-binary college student and rising tennis star to help for the summer. Coach Charlie is accustomed to doing things his way, as he always has-calling the kids "Miss Williams" and "Mr. Brown" and separating them out each day according to gender for speed matches. Raegan, too shy to criticize, quietly tries a different approach-asking kids their pronouns and integrating games to get the kids engaged. But when some of the kids don't fit neatly into the gender boxes assigned to them, they decide the rules need to change once and for all.