Natsuiro Kiseki

A few days before summer vacation, Natsumi Aizawa falls out with her friend, Saki Mizukoshi, when she decides to quit the tennis club. The next day, Saki reveals she is transferring schools, which upsets Natsumi. Wanting them to make up, their other friends Yuka Hanaki and Rinko Tamaki call Natsumi and Saki to a large rock at a shrine temple they used to visit in their childhood, said to grant wishes to friends who wish for the same thing. As they gather together at the rock and casually observe the sky, the rock gives off a strange magical glow and the girls soon find they are able to fly.

The day after they flew, Natsumi and Saki are still hostile towards each other. As Yuka and Rinko hang out at the rock and casually think that Natsumi and Saki are best when they're together, the rock's magic activates, causing Natsumi and Saki to become literally stuck to each other like magnets, finding themselves unable to pull away from each other. Realising this is Yuka and Rinko's doing, Natsumi and Saki cooperate with each other to chase the culprits across town. As the chase reaches its climax, Rinko mentions to Natsumi and Saki about Yuka's desire for them to make up before the two go on to stop Yuka before she runs into the ocean, only for the magic to becomes undone causing them to fall in instead. Afterwards, Natsumi and Saki apologise make up with each other. Meanwhile, one of Natsumi's brother's friends, Yuusuke, is insistant that he saw Natsumi and the others flying.

Natsumi hears from her brother Daiki about what Yūsuke claimed to have seen. As Natsumi advises the others to be careful about flying haphazardly, she and Saki make a little revenge wish to put Yuka and Rinko through what they went through the other day. As Yuka and Rinko find they are unable to get unstuck as easily as Natsumi and Saki did, Daiki and Yūsuke fall out with each other when Yūsuke takes his witch theory too far. Later, Saki runs into Yūsuke and hears about the troubles he is facing with noone believing him while Yuka and Rinko finally becoming unstuck after speaking with Daiki. In order to get Daiki and Yūsuke to make up, Saki decides she should fly once more to prove Yūsuke right. However, the rock fails to grant their wish to fly, leading the girls to realize they can't make the same wish twice. However, Natsumi manages to push Daiki to make up with Yūsuke on his own.

As Yuka learns that her cousin, Takashi Sano, who she has a crush on, has feelings for Saki, she unconsciously wishes she could be like Saki whilst sitting on the rock with Rinko. The rock's magic activates, causing Yuka to end up in Saki's body and vice versa. Yuka takes advantage of being in Saki's body to ask Takashi on a date, much to the displeasure of Saki. As the girls attempt to wish to return things back to normal, things only get worse Natsumi and Rinko end up switching bodies instead. The next day, Yuka goes with Takashi to the aquarium whilst Saki and the others follow after them. At the end of the date, Yuka comes to realise that it's Saki he likes and not her, whilst Rinko drags Yuka away before she and Takashi can kiss. As Yuka accepts the situation, everyone returns to their normal bodies before Saki sends a rejection text to Takashi.

After getting caught in the rain, Rinko ends up with a fever. With Rinko's parents going out for the day, Yuka cancels her plans to get a special poster in order to take care of Rinko. Meanwhile, Natsumi and Saki are invited by their seniors to join a tennis tournament. After Rinko recovers from her cold, Yuka catches one of her own. As the others hang out without Yuka, they recall how it was because of Rinko's odd visions and Yuka's support that the four of them became friends and begin to threat what life will be like once Saki moves. Wanting Yuka to get better, the girls prepare to make a wish on the rock only for Yuka to show up back to health. After the girls accidentally tumble down some steps together, they all become able to see the whales Rinko sees in her daydreams.

At Natsumi has her hands full with tennis, studying and looking after Daiki whilst her mother's away, Yuka, Saki and Rinko make a wish on the rock which causes Natsumi to split into two. Whilst obviously displeased with the arrangement, Natsumi starts putting good use to her doubles to get things done, with one Natsumi doing tennis practise and the other doing homework and chores. However, as the day of the doubles match comes, Natsumi notices her tennis-playing double is pushing herself too much to become stronger. As Natsumi calls to her double to come to her senses, the magic wears off and the two Natsumis become one again. Using both the training one Natsumi went through with the strategy the other learnt from Saki, Natsumi manages to put up a strong performance. Afterwards, the girl attend a festival to send off their wishes.