Transformed into Ancient Cannon Fodder, I Relied on the System to Win

A family of three enters an ancient sadistic novel. Just when they thought it was going to be hell, the [System] fell from the sky. She originally wanted to rely on the platform to be self-reliant, but she found out that there was a reborn person in the same village, and she was treated as a pet. And stuffed all the good things into their hands. The lying-down trio: "Did we get the wrong script? We really just want to lie down!"