In the first season, players follow a story of knight-in-training named Kasel, who seeks to uncover the mystery behind his brother's disappearance.

Along the way, he meets his priest childhood friend Frey, magician Cleo and her bodyguard Roi, and also encounters many other playable heroes.

These heroes are divided into 7 classes (knights, warriors, assassins, archers, mechanics, wizards, and priests), 2 types of attacks (physical and magical), and initial grades that can be increased through awakening.

On September 18, 2019, the South Korean girl band Dreamcatcher released the EP Raid of Dream, which was based on the game's story and themes.

[17] A Windows client of the game has been announced in April 2021,[18] and a remaster / revamp of the game's aesthetics and UI has been announced in Q1 2021,[19] which eventually got the working title King's Raid 2,[20] and further named as King's Raid: The Reload, with a mini-site[6] showing the all-new improved graphics giving back a similar look what could be seen in the cinematics of Season 1.

The deployment of the visual update was slated to be released by the end of 2021, but got postponed to Q2 2022, in order to make a flawless experience in all contents.