This video is made in  Wizstar using Seedance 2.5

Achoo. Bicycle. Achoo. Sheep.

That is the whole idea behind this Genjutsu transformation. Two characters are riding a bike. The front rider sneezes once, and the bike becomes a bicycle. He sneezes again, and the bicycle becomes a sheep. Both riders stay in their seats through every change.

This post breaks down how the prompt works, what you need to upload, and the locks that keep the two characters from changing, drifting, or falling off mid-transformation.

What happens in the video

  • Start: two characters riding a bike, front rider steering, back passenger seated behind.
  • First sneeze: the bike transforms into a bicycle.
  • Second sneeze: the bicycle transforms into a sheep.
  • End: both characters are still in their original positions — front in front, back behind — now on the sheep.

Every transformation is timed to a sneeze. Nothing changes between sneezes, and nobody falls off.

What you need

  1. Reference video — a sneeze clip. It supplies the ride, the sneeze timing, and the bike-to-bicycle-to-sheep transformation.

  1. Image 1 — FRONT — the front rider. This is the character who steers, and who sneezes.

  2. Image 2 — BACK — the back passenger, seated behind on the same bike.

 

Use clear reference images for both characters. The front character must stay in the front position in every frame, and the back character must stay in the back position in every frame.

The video reference must also be added — images alone are not enough. The sneeze timing and the bike-to-bicycle-to-sheep transformation come from the reference video, so upload that video as well, along with Image 1 and Image 2.

The locks that make it work

Position lock: Front stays front, riding and steering. Back stays back, seated behind. Neither character swaps seats, and neither leaves the vehicle or animal during a transformation.

Identity lock: Face, skin tone, and body type of both characters match their reference images exactly in every frame.

Outfit lock: The complete outfit of both characters stays unchanged in every frame.

Hair lock: Hair of both characters stays unchanged throughout.

Temporal consistency: No flickering, and no identity drift across frames.

Source character lock: Do not copy any hair, attire, or accessory from the original source video's characters. Only the two reference characters are used.

Background lock: The background stays unchanged. Only the two main characters are replaced, while the bike, bicycle, and sheep transformation continues as in the source video.

Text lock: No subtitles, no watermarks, and no text of any kind on screen.

How to use it

  1. Upload the sneeze reference video.
  2. Upload Image 1 for the front rider and Image 2 for the back passenger.
  3. Paste the prompt below as one block, keeping every lock line.
  4. Generate, then check before posting.

Copy/paste prompt

 

PromptCopy
Photorealistic video recast. Two characters are riding a bike — FRONT character matches @image1 exactly, riding and steering the bike. BACK character matches @image2 exactly, seated behind on the same bike. When the FRONT character sneezes, the bike transforms into a bicycle, then sneezes again and transforms into a sheep — both characters remain on the vehicle/animal throughout every transformation. All transformations happen naturally in sync with the sneeze action. POSITION LOCK: @image1 character strictly in FRONT riding position, @image2 character strictly in BACK seated position — unchanged throughout entire video. IDENTITY LOCK: face, skin tone, body type of both characters must match their respective reference images exactly in every frame. OUTFIT LOCK: complete outfit of both characters unchanged in every frame. HAIR LOCK: hair of both characters unchanged throughout. TEMPORAL CONSISTENCY: no flickering, no identity drift across frames. SOURCE CHARACTER LOCK: do NOT copy any hair, attire, or accessory from original source video characters. BACKGROUND LOCK: background remains unchanged — only the two main characters are replaced, bike/cycle/sheep transformation continues as in source video. TEXT LOCK: no subtitles, no watermarks, no text of any kind.

 

Before posting, check this

  • Each change lands exactly on a sneeze.
  • Nobody falls off during any transformation.
  • Faces and outfits stay the same in every frame.
  • Background is unchanged.
  • There is no on-screen text.

Final checklist

  • Reference video uploaded, with clear sneeze timing
  • Image 1 locked to the front rider, Image 2 locked to the back passenger
  • Bike to bicycle on the first sneeze, bicycle to sheep on the second sneeze
  • Both characters in their seats through every transformation
  • Identity, outfit, hair, and background locked, with a completely clean frame

One sneeze for a bicycle, two sneezes for a sheep — and both riders never leave their seats.