Withoutwarning,millionsofmysteriousalien"doors"suddenlyappeararoundtheglobe.Inarushtodeterminethereasonfortheirarrival,mankindmustworktogethertounderstandthepurposeofthesecosmicanomalies.Biz...

Without warning, millions of mysterious alien "doors" suddenly appear around the globe. In a rush to determine the reason for their arrival, mankind must work together to understand the purp...