This is the challenge of the current game jam. I use mainly RPG Maker too. Most people make cut scenes, by having them on different maps than the 'game play' section. With this one map challenge, if a cut scene is desired, then it has to occur on the same map as the game play. This will take creativity. Please do not make a larger map, and then have 'void' spaces between gameplay map and cut scene maps. Some have made a single map that have gad over ten maps on them, separated by void spaces, so that each map cannot be seen when playing on a different map. When there are multiple maps on a single map, then it is still more than one map. Have fun figuring out this challenge.