What you need to do?
The Second Chance stamp can be earned in Chapter 5’s Duplicity: A Kiss and a Curse/ the Devil variant: Heartbroken Frog.
To earn this stamp, the Prince will need to earn a second chance with the Witch.
This stamp is actually a potential solution to the Kiss and a Curse puzzle.
If you’d already reach this answer while making your way through the main game, return to the level and you’ll automatically unlock the stamp.
How to get the Second Chance stamp in Storyteller
Panel 1
Start with a Kiss scene to have the Witch be rejected by the Prince
Panel 2
Use a Forest scene to have the Witch turn Snowy into a Frog.
Panel 3
Place a Kiss scene and have the Prince reject the Witch.
Panel 4
Use another Forest scene to have the Witch turn the Prince into a frog as well.
Panel 5
Place a final Forest scene. This time, have both the Prince and Snowy meet in their frog forms to explain the situation.
How did you find this guide? Let me know in the comments.