Both Data Storyteller Charts and Data Storyteller Maps are part of the same installer! They are split up into two plugins because they require different settings and controls to be able to display your data correctly.
After installing Data Storyteller you will see two plugins under Vide Effects>Digital Anarchy: Data Storyteller Charts and Data Storyteller Maps. Apply Charts to create Bar, Line, or Scatter graphs, or Maps to display data on a US or World Map. You can also apply both, Charts and Maps, to the same timeline.