I don't know of such a plugin, because this is usually done by events.
just a sequence of a control variable command to get a random number, followed by a series of conditional branches to check which number was rolled and then transfer player to different places depending on the number.
the problem with doing this as a plugin is the configuration of your maps into it - every point the player could be transferred to would have to be custom-added to the plugin, and that is a similiar workload as doing it by events. Doing it by plugin would only have advantages if the entire structure is much more complex - and then that would be a custom plugin as well in most cases, not something a lot of people could use.