The main character would obviously be the girl without glasses. There could also be the person who dunks her, whether it's a friend, a rival, or just an accidental bystander. Another possible main character could be someone who witnesses the event and then becomes involved in the girl's story afterwards, like a lifeguard who has to deal with the situation.
The girl without glasses is key. She could be a shy girl who is at the pool against her will, dragged there by her more outgoing friends. Then there's the character who dunks her, which could be a popular kid at the pool trying to show off. There might also be an older character, like a pool manager, who has to step in and sort out the situation after the dunking, and this manager could have a backstory that somehow ties into the girl's experience at the pool.
Maybe it's a tomboyish girl who doesn't care about losing her glasses in the pool. She's more interested in having fun and being active in the water.
The girl without glasses is the central figure. There may be an antagonist like a school bully who constantly teases her about her wedgies and her glasses - free look. Then there could be a wise old janitor who gives her advice on how to deal with the bullies and how to embrace her new self. There might also be a group of girls who initially exclude her but later come to accept her as she shows her true character despite the physical changes.
Well, perhaps she jumps in the pool without her glasses because she's in a rush to join her friends. Once in the water, she realizes she can't see clearly but still has a great time playing water games. Later, she might worry about how she'll find her glasses when she gets out.
The main character could be an aspiring actress. She's at an audition and has forgotten her glasses. In the crowd of other auditionees, she stands out because of her natural beauty and her nervous energy. A casting director notices her and decides to give her a chance, not just because of her looks but also because of the unique way she presents herself without her glasses.
She could be a young detective in a mystery - based fanfiction. Usually, she uses her glasses to carefully observe clues. But without them, she glares in annoyance when she misses something important. She might be on the case of a stolen artifact or solving a murder mystery, and her lack of glasses is a hindrance that makes her more irritable.
The main character could be a young student. She usually wears glasses in school but one day forgets them at home and it happens to be a rainy day. She has to navigate through her school day without them, facing challenges like reading the blackboard and recognizing her friends from a distance. But she also discovers new things about herself and her environment on this glasses - free rainy day.
It could be the roller coaster operator. He might notice the girl without glasses and be intrigued by her. He could play a significant role in her adventure on the roller coaster, like making sure she has a safe and exciting ride.
She might struggle to find her way out of the pool safely. Without her glasses, her vision is blurry and she could accidentally swim into the pool's edge or other objects.
She could end up in the wrong part of town. Maybe she was supposed to be at a library but ended up near a noisy construction site because she couldn't read the street signs clearly without her glasses.
A possible plot could be that the girl is drunk without her glasses at a family gathering. She misbehaves a bit, which is very unlike her. Her family members are shocked, but as she sobers up, she realizes how her actions affected them. This experience could be a turning point for her, making her more aware of her behavior when she drinks in the future, even if it was just a one - time situation due to not having her glasses and not realizing how much she had drunk.