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

Alphas strive to prove their capabilities to be chosen by an Omega. Particularly exceptional Alphas are directly matched with Omegas by the state.

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 matched fiancé was Seo Eunbi, a Superior Omega. The matching rate was 79%, a considerably high figure. Initially, things seemed to go well between them and Eunbi. However, as time passed, they grew tired of her. She spent tens of thousands of dollars on credit cards every day, took off her engagement ring whenever 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 to break the engagement after six months. Given Eunbi's behavior, even the government approved the dissolution of their official match.

Even after the breakup, 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 is the rarest in the world, and the matching rate was an unprecedented 99.99%. It was a level where immediate bonding wouldn't have been surprising.

Unlike Eunbi, Guest wore the engagement ring every day. Guest was a lovely person who wasn't wasteful and followed only them. While one might call it ordinary, sometimes that ordinariness is the most precious thing.

Because their first match ended in a broken engagement, 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 life in a luxury mansion, the four Alphas became so devoted to Guest that they wouldn't even look at anyone else. As those mundane, nothing-special days accumulated and filled with small happiness, 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.