One summer's day, six young strangers move into a house together and start living an unscripted drama.
Everyone changes into swimsuits after lunch and heads to the pool on the terrace. The boys are excited at the sight of the girls in their swimsuits.
The roommates celebrate tap dancer Yuuki's birthday. However, his harsh words trigger tears from both Mizuki and Yuriko.
Makoto and Minori go out to dinner alone together. Yuuki asks Yuriko out on a date, but she's had a bit too much sake to drink. What will she say?
Tatsuya rocks the house by declaring he'll take each of the three girls on a date this summer. Meanwhile, something is up with Minori and Makoto.
Tatsuya declared he would go on a date with all three of the girls. First comes Mizuki, and next is Yuriko, but her date opens a whole can of worms.
Makoto angers Tatsuya with his rash behavior but shows no signs of remorse, creating a touch-and-go situation in the boys' room.
Minori loses interest as she sees how Makoto behaves. Tatsuya reflects on his dates with the three girls in an effort to choose one as his lover.
Tatsuya and Minori go on a second date. Tatsuya tells her how he feels but says she need not give her answer now. Makoto has a present for Minori.
Unable to forget her ex, Yuriko calls and asks to see him. Meanwhile, after receiving a present from Makoto, Minori talks to him about her feelings.
At the Girls Award event, Tatsuya and Minori meet former member Seina, who encourages their budding relationship. A new member arrives from overseas.
Tatsuya finally asks Minori to officially be his girlfriend. How will she answer? Hawaii-born Arman, the newest housemate, asks Mizuki out on a date.
Yuriko confesses her feelings to her ex before leaving the house. And her ex's reply? The boys get excited over the arrival of the new girl member.
Arisa's arrival to the house excites Arman and Yuuki because she's "their type." Meanwhile, Tatsuya and Minori find it hard to take the next step.
A kiss takes Tatsuya and Minori's relationship to the next level. Arisa and Arman head to Mt. Takao on a date. But Mizuki also has feelings for Arman.
Arisa grows closer to Arman after having gone out on a number of dates. Yuuki, who also hopes to ask Arisa out, tries hard to steal her attention.
Arman et al. prepare the Japanese-style room for Minori and Tatsuya, now a couple. Arisa promises she will go anywhere with Arman if he wins his game.
Minori confesses her relationship issues with Tatsuya to her older sister, Kurumi, who asks Minori whether the two are having make-up sex or not.
Arman and Arisa go out on a Christmas dinner date. The two hold hands and enjoy the Christmas lights. Then, Arman expresses his feelings to Arisa.
Excitement buzzes as Terrace House welcomes two new members. But upon Natsumi's arrival, an incident causes a clash between her and Minori.
New member Natsumi invites Arman out to the beach one morning. Later that day, Arman fixes the busy Arisa a Hawaiian fish salad called "poke."
One night, the housemates discover they have run out of food. Minori suggests eating the fancy wagyu beef that Tatsuya got as a present at work.
Tatsuya is furious with his housemates for eating his beef without his permission. Minori's older sister comes to visit and reasons with him.
Tatsuya and Minori depart from the house as a couple after seven months. Upon arrival, the new girl becomes an instant love interest among the boys.
Aspiring architect Yuto Handa moves in after Misaki. He intends to complete his studies at Harvard and attracts the attention of the female residents.
Hikaru is interested in the new housemate Misaki. When she talks about her ex, he doesn't hide his irritation. The next day, when the two are alone...
Hikaru takes Misaki for a romantic motorbike ride to the beach. Later, Misaki tells Natsumi that she wishes the date had lasted forever.
Yuto promises to go fishing with Natsumi, but he changes his mind and tells her he can’t go because of his girlfriend. Natsumi starts to cry.
High school student Riko Nagai, who recently won a national beauty contest, joins the gang. Misaki quickly befriends her and they chat about Hikaru.
When Misaki buys some sleepwear with Hikaru's opinion in mind, Natsumi comments on it and the two get into an argument. Yuto sides against Natsumi.
Misaki confesses her feelings to Hikaru. That night, she says something that makes Natsumi incredibly angry and winds up paying the price for it.
When Hikaru suddenly declares that he will leave the house with Natsumi, the rest of the members are shocked. Misaki has a talk with him in private.
Hayato promises to go on a date with Riko, but she worries she's too young for him. During the welcome party, an unexpected surprise occurs.
Riko asks Hayato if he thinks she's immature, but he reassures her. They decide on Tsukiji for their second date. Arman participates in a festival.
Momoka works up the courage to ask Arman out to the beach. Hayato and Riko enjoy their date at Tsukiji. Meanwhile, Yuto makes a decision.
Shortly after Handa's departure, Yuuki arrives at the house. Good looking and tall, he's just Riko's type. But he has his eyes on someone else.
Yuuki's had his eye on Misaki ever since moving in and asks her out on a date. Misaki tells him about her unrequited feelings for Hikaru.
After their date ends awkwardly, Riko tries to clear the air with Hayato. Meanwhile, Momoka faces a life-changing contest.
During Misaki's birthday party, Yuuki can't control himself and confesses his feelings for Misaki. The next morning, she asks if he remembers.
Recent entrant Masako quickly declares her fondness for Hayato and promises to cook with him. One night, the two of them spend time alone at the pool.
Yuuki goes on his first drive with Misaki to Yokohama, where she once fell out of love. He finally tells her how he really feels about her.
Masako feels even more strongly about Hayato and, after seeing him with Riko, asks him out on a date. Arman goes out for nighttime skateboarding.
Riko and Hayato's date to see the fireworks ends uneventfully. He says that he doesn't see her as a woman, but this statement proves consequential.
Despite the apparent lack of progress in Riko and Hayato's relationship, the other housemates question them upon learning they have already kissed.
The house members confront Hayato and Riko about the lies they told about their relationship. Hayato remains silent and all eyes turn to Riko.
In the season finale, as the evening of their arrangement arrives, Hayato prepares for Riko in his restaurant. But she may be headed somewhere else.