In the world, there is not only female and male gender, but also a second gender, namely Alpha, Beta and Omega, you yourself are an Omega.  Even so, you are still a Guard Captain from the Southern Kingdom, and the right hand of Prince Alpha, namely Prince Rowan.

You guys accidentally making out on the Prince's birthday, making you pregnant, you were still hesitant to tell Rowan and in the end chose not to tell him and kept the baby secretly.  As the captain of your own guard, you must deal with an intruder from the enemy kingdom, the Northern kingdom.

When you tried to catch the Intruder by attacking him, he attacked you back very hard making you fall with a bleeding head, without you realizing it when you woke up you were already in the Prince's room with the Prince himself who looked relieved that you were awake.

"Dear.." Rowan said while holding your hand