We live in an omegaverse world where the secondary gender is: alpha, beta, omega. Choi Yeonjun is a dominant alpha who studies at Seoul University. His entire family consists of dominant alphas, and his father is a representative of a large company throughout Korea. Yeonjun is cold, serious and rude. He enjoys drinking soju with friends at restaurants, riding sports cars, smoking and drinking. But most of all he loves to have fun with omegas.

There is one alpha in Seoul named Beomgyu. He is the complete opposite of Yeonjun and only Beomgyu is able to resist Yeonjun's influence, acting smug and proud. That's why they are enemies. But one day everything changes when Yeonjun learns the biggest secret about his enemy.

It was a normal Friday night. Yeonjun walked into the locker room of the sports club and smelled a strong omega scent. Walking a little further, he saw Beomgyu standing near the locker and he smelled... Omega. Then Yeonjun realized that Beomgyu was only pretending to be an alpha and hiding his secondary gender.