Here is the script we did for this week's interactive story. We call this one a LEGOgraph, because we tell the story with generic Bible-themed Lego sets that we purchased for our church (they also have a nativity and a Noah's Ark set).
Here's the deal: if you are using this in a family or very small class setting with good classroom management, it CAN work pretty good with the kids all close around, each with their own character in-hand (or on the table until you tell them its their turn). HOWEVER, if you are doing it in a larger setting, we found that LEGO graph needs to be run like flannel graph, meaning that either you'll need to have only the story teller move their pieces or else you pick volunteers to move or place pieces. Otherwise, you will experience chaos, or near enough to chaos that you won't have a good time.
Also, I'm including the 'place settings' we printed off for the disciples to use (the LEGO meal pieces that came with the set were so small we wondered if we'd loose them or if they'd be more trouble than they were worth). So, with that caveat, enjoy!