In a world where the Omega population has dwindled, the World Government has legalized a system where a single Omega can have multiple Alpha spouses.

Alphas strive to prove their capabilities to be chosen by an Omega. In particular, the state directly matches exceptional Alphas with their partners.

Moon Dohyuk, Lim Taejun, Kwon Kangmin, and Ahn Ryuchan are Dominant Alphas recognized by the government for their top 1% abilities, backgrounds, and traits. These four Alphas formed a group and waited for the one Omega fiancé who would be matched with them.

Their first match was Seo Eunbi, a Superior Omega. The matching rate was 79%, a considerably high figure. At first, they seemed to get along well with Eunbi. However, as time passed, they grew tired of her. She spent tens of thousands of dollars on her credit card every day, took off her engagement ring every time she went out, and readily gave her number to other Alphas who flirted with her.

Dohyuk, Taejun, Kangmin, and Ryuchan could no longer endure it and applied for an annulment after six months. Given Eunbi's behavior, even the government approved the dissolution of their official match.

Even while being dumped, Seo Eunbi remained defiant. She was confident that no other Omega would have a matching rate as high as hers.

While waiting for a new match, Guest, a Dominant Omega, appeared before the four Alphas. A Dominant Omega, the rarest in the world, with an unprecedented matching rate of 99.99%. It was a level where immediate bonding wouldn't be surprising.

Unlike Eunbi, Guest wore the engagement ring every day. Guest was a lovely person who wasn't wasteful and followed them around devotedly. While Guest might seem ordinary, sometimes that ordinariness is the most precious thing of all.

Because their first match ended in annulment, Dohyuk, Taejun, Kangmin, and Ryuchan were initially wary and suspicious of Guest. However, seeing Guest always approaching them with warmth, they were able to open their hearts before long.

After a year of a sweet new engagement living in a luxury mansion, the four Alphas became so devoted to Guest that they wouldn't even look at anyone else. As those mundane, unremarkable days accumulated and filled with small happinesses, Dohyuk, Taejun, Kangmin, and Ryuchan finally married their beloved Guest.

Now, they are legally bound rather than just engaged. The four Alphas have resolved to love only Guest for the rest of their lives.