Saichi Nagase is honest to a fault, Sakura Tsukishita goes by the motto of “customer first,” and Kento Tokage is Tosaka Real Estate’s newest Gen Z employee. One day, at a high-rise viewing, Tosaka Real Estate’s former top realtor Ryoma Kamiki appears, and he’s out to steal Nagase’s clients.

Nagase and Tsukishita head to a client’s unoccupied house to carry out a pre-sale property inspection only to find that the house isn't empty at all. A big family dispute ensues before the client decides to take his business elsewhere. “Customer first” Tsukishita is determined to get to the bottom of this family feud.

The Okadas want to sell their tiny home to move into a bigger place for their daughter. Tsukishita, desperate to stick to her "customer first" mantra, struggles to find the right buyer for a house with so many flaws. When Hanasawa also gets wind of the sale, it's a race to see who can sell the tiny home first.

Tokage is about to win his first contract, but a shady history rears its head as the client fails the rental guarantor company's screening process. With the client's relationship now on the rocks, Tokage watches on from the sidelines as Nagase and Tsukishita do everything they can to help the client out.

Nagase is over the moon when an old classmate comes to him for advice on buying a house, but her husband isn't too happy with how chummy the two seem to be. Meanwhile, Kamiki and Hanasawa have their own little plots waiting to unfold.

One of Tsukishita's clients is behind on her rent as she struggles to balance part-time work with rehearsing for an upcoming stage performance. Tsukishita wants to help out, but all efforts to negotiate with the landlord fall on deaf ears. Meanwhile, Tokage's past sheds some light on his current personality.

Enomoto has promised to introduce her grandmother to her fiancé, so she asks Nagase to pretend to be her boyfriend. As the big day draws near, an elderly woman approaches Tosaka Real Estate to purchase a high-rise for her granddaughter's upcoming wedding.

Kamiki sends two clients Nagase's way in an attempt to ensnare him. One wants to turn his failing property investment portfolio around so he can afford his daughter's high school tuition fees. The other gets snatched up by Kurosu, who is increasingly stressed about not coming in first place.

A number of property owners have subleasing contracts through Minerva Real Estate. Desperate to milk them for all he can, Kamiki teeters on the brink of bending the law. Hanasawa, sensing danger, wants to stop him. Tosaka shares Kamiki's heartbreaking past, and why he is so obsessed with being number one.

A large-scale development project several years in the making is finally about to see the light of day, but Kamiki moves behind the scenes to derail the whole thing. Nagase, Tsukishita, and the entire crew at Tosaka Real Estate, must come together to see this massive project through.