Tenchi Masaki is an ordinary young student, living in rural Japan with his father and grandfather. On his way home from school one day he witnesses a pair of strange flying objects descend from the sky. He investigates the nearest landing site and finds, lying unconscious among the debris, a pretty young woman who smells strongly of alcohol. He manages to revive her, whereupon she begs his protection from the evil space-pirate who is pursuing her. From this point onward Tenchi's commonplace life becomes increasingly hectic, as one beautiful girl-from-space after another shipwrecks on his doorstep and takes up residence with his family.
This series differs from the OAV in many ways.. though most of the charas are very similar. The series has a more intricate storyline behind it than Tenchi Muyo OAV, but is still a good series without going too far overboard. Kagato is one chara who is drastically different than that of the Kagato in the OAV but still a "bad guy" none the less. A great series I thoroughly enjoyed every minute of it :)