Make epic stories without any command blocks! All you need is this mod. To start, check out this guide (WIP). The mod is still in alpha version, so expect many bugs. I highly recommend using this with my other mod, Objective Overlay
What does it do?
When player completes a task (for example travels to some location), a set of defined commands will get triggered, letting users make for example dialogs or rewards players. Another task is then triggered, with different location or task type.