Season 1

Unable to afford a place with Kim Min-suk, Kang Sang-ung visits his father — who grants him a power that will test both his morals and his bank account.

Sang-ung calls Park Jeong-ja for help when he finds himself in a crisis — only to end up in danger. Meanwhile, Jo Anna uses Min-suk as bait to lure him.

After realizing he's become a target, Sang-ung trains with Byeon Ho-in and Bang Eun-mi. Soon after, he contacts Jeong-ja for help to face Anna's army.

Longing for a normal life, Sang-ung considers selling his power to the Mundane Vanguard — but Ho-in attempts to stop him from making a mistake.

After narrowly escaping danger, Sang-ung, Ho-in and Eun-mi find themselves taunted by Jo Nathan. Soon, they investigate a drug ring at a nightclub.

After escaping another trap, Sang-ung realizes his regular life is taking a negative impact. But Anna comes forward with an unexpected proposal.

The bank scheme quickly turns perilous, pitting Sang-ung against Anna and Nathan. But Nathan lures him in by taking what matters most.

Fighting for his love, Sang-ung goes toe-to-toe with the Mundane Vanguard. Will he and his friends finally become the heroes they were meant to be?