Ambush

I have a friend who teaches grade 5. For her students' writing class, she has them write stories based on some of their favourite paintings of mine (which is a huge honour for me!)
I told her that the class could write a story of their own, and I would take a section and illustrate it for them. This was a point in their story where the protagonists are prematurely celebrating their conquest, unaware of a pending ambush.