15 Action Webtoon Story Ideas: High-Octane Stories for Vertical Scroll

Looking for action webtoon ideas? Here are 15 story concepts featuring martial arts, heists, supernatural battles, and intense combat.

Action webtoons live or die on momentum—the vertical scroll format creates natural pacing for fights, chases, and dramatic confrontations. These 15 ideas leverage action storytelling’s core appeal.

Martial Arts and Combat

1. The Retired Champion

Ten years ago, she was the youngest underground fighting champion. Now she teaches self-defense at a community center—until her old organization decides retired champions are liabilities.

2. The Body Transfer

A martial arts prodigy dies and wakes up in the body of an unathletic office worker. She has all her combat knowledge but none of her trained reflexes. Rebuilding her skills means starting from zero.

3. The Debt Fighter

To pay his father’s gambling debts, a college student enters illegal cage fights. His opponents get harder, the organization gets shadier, and walking away gets more impossible.

4. The Technique Hunter

A fighter travels to collect martial arts techniques from masters around the world. But she’s not preserving styles—she’s hunting down the people who killed her teacher, using their own techniques against them.

Heist and Crime

5. The Impossible Crew

A legendary thief assembles a team for one last job—but each member thinks they’re the protagonist and have their own agenda. The heist succeeds or fails on whether they can stop competing.

6. The Fixer’s Apprentice

A “fixer” cleans up problems for the wealthy and powerful. Her new apprentice is too moral for the work but too deep to quit. Their jobs get progressively darker until someone draws a line.

7. The Corrupt Precinct

The only honest cop in a corrupt precinct investigates her colleagues without backup, knowing any case could expose her. One piece of evidence could bring it all down—or end her.

8. The Bounty Board

In a future where bounty hunting is legal and gamified, hunters compete for captures and streaming views. A rookie hunter discovers the top bounty isn’t a criminal—it’s a whistleblower.

Supernatural Action

9. The Demon Contract

She made a deal with a demon for power, but the contract has fine print—she must consume other contractors to survive. Each fight grants their abilities and their memories.

10. The Monster Hunters Guild

A guild protects the city from supernatural threats, but members are dying. A new recruit discovers internal politics are as dangerous as the monsters—and someone’s feeding information to the enemy.

11. The Exorcist Tournament

Exorcists from different traditions compete in a tournament to determine which method is superior. But the demons they’re summoning for demonstrations are cooperating too willingly.

12. The Reaper’s Day Off

A grim reaper gets temporarily stranded in the mortal world and must hide among humans while waiting for pickup. Unfortunately, other supernatural entities are hunting her—and she can’t use her powers without revealing herself.

Military and Tactical

13. The Defector’s Escape

An elite soldier defects with critical intelligence, hunted by her former unit across hostile territory. Every person who helps her becomes a target. Trust is impossible but necessary.

14. The Siege

A small unit defends a strategic position against overwhelming forces. No reinforcements coming, no extraction planned. Survival means holding the line until ammunition runs out or help arrives.

15. The Sleeper Agent

She’s lived a normal life for decades—until activation orders arrive. The mission conflicts with everything she’s built. Complete it or lose everyone she loves.

Action in Vertical Format

Action webtoons excel through:

Motion flow: Vertical scroll guides the eye through fight choreography
Impact panels: Full-width moments for devastating hits
Pacing control: Build-up and release through scroll speed
Environment as weapon: Use vertical space for falling, climbing, and elevation

The best action stories balance spectacular choreography with stakes we care about. Choose an idea where the fighting serves character development.

Ready to create action scenes? Multic offers collaborative tools and AI-assisted generation—perfect for bringing dynamic combat to life.