In the countryside where there's nothing else to do, people are open-minded about sex. After moving from the city to a remote island, "Sato" (played by Rabbit Kento) grows frustrated with the lack of playgrounds and no cell phone signal, cursing, "Ah, damn this shitty countryside!" Scolding him with "What a rude guy, you city folk!" is "Ruka Itoi," who barges into his room uninvited. She invites him, saying, "If you're in the countryside, you might as well enjoy it," and when Sato asks what he should do, she casually replies, "Sex or something." Seeing he's inexperienced, Ruka pulls out a condom, hikes up her skirt, and guides his hand to her crotch. He's pushed down onto the perpetually unmade bed, but they're interrupted by her father's voice.
The next day, Sato returns home and is startled by Ruka, who's lying in wait in his room. Then "Kiyoka Igarashi," "Natsume Usui," and "Kuwahara Seira" also barge in, and the three accuse Ruka of "jumping the gun?" Stripped by his classmates on the unmade bed, Sato is made to ejaculate via a handjob.
The following day, Seira is waiting for him, starting with a deep kiss with intertwined tongues, then sucking on his nipples and penis, and fingering her shaved pussy. She takes his virginity in missionary position, finishing with a condom creampie. Seira drips the semen from the condom onto her palm and licks it up. Afterward, they continue with intertwined tongues, nipple sucking, repeated missionary with condom creampies, doggy style, missionary with internal ejaculation, cowgirl, and front-facing positions with tongue kisses and creampies.
The next day, as Ruka barges into his room slurping cup noodles, Sato gets an immediate blowjob and ejaculates inside her in missionary. He begs Ruka, a track club member, to wear her uniform, gropes her breasts, intertwines tongues, and fingers her. He licks her armpits and nipples, fingers her shaved pussy, and performs cunnilingus. He cums inside her in missionary, cowgirl, reverse cowgirl, doggy style, and missionary.
On the night of the festival, rain starts falling, and he heads back home with Kiyoka in her yukata. On the unmade bed, they intertwine tongues, he sucks her nipples, fingers her shaved pussy, and immediately licks her. She sucks his nipples and penis, and he ejaculates inside her in missionary, front-facing, cowgirl, and front-facing positions. They intertwine tongues and he cums inside her in missionary.
The next day, Natsume follows him home, and on the unmade bed, they intertwine tongues and he immediately licks her shaved pussy. The other three burst in, and his classmates sit on his face, play with his nipples, press their breasts against him, finger him, and suck his nipples. They suck his nipples and penis, and he ejaculates inside Natsume in cowgirl. He lines up four asses to lick and finger, then cums inside Natsume in missionary. Eventually, Sato passes out.
When he regains consciousness, only Natsume remains. Sato intertwines tongues with her, sucks her nipples, fingers her, and gets sucked. He repeatedly ejaculates inside her in missionary, doggy style, scissoring, from the side, front-facing, and missionary.