The Rhinegold.  I.  Alberich steals the Rhinegold.  II.  Fasolt and Fafner abduct Freia as a    

   hostage.  III.  Wotan and Loge capture Alberich.  IV.  (a) Wotan robs Alberich of his

   ring; (b) he pays Fasolt and Fafner with it; (c) Fafner murders Fasolt for the ring. 

The Valkyrie.  I.  (a) Siegmund and Sieglinde fall in love; (b) Siegmund draws the sword

   from the tree.  II. (a) Wotan breaks Siegmund's sword with his spear; (b) Wotan kills

   Hunding.  III.  (a) Brünnhilde rescues Sieglinde; (b) Wotan punishes Brünnhilde by

   plunging her into a magic sleep.

Siegfried.  I.  Siegfried reforges his father's broken sword.  II.  (a) he kills the dragon

   Fafner; (b) he kills Mime.  III.  (a) he breaks Wotan's spear with his sword; (b) he

   awakens Brünnhilde.

The Twilight of the Gods.    Prelude.  (a) The Norns' thread of fate snaps; (b) Siegfried

   sets out in search of new adventures.  I.  (a) He is tricked by Hagen's potion into

   forgetting Brünnhilde and falling in love with Gutrune; (b) he wins Brünnhilde for

   Gunther.  II. A double marriage takes place–between Siegfried and Gutrune, Gunther

   and Brünnhilde.  III.  (a) Hagen murders Siegfried; (b) he murders Gunther; (c)

   Brünnhilde immolates herself on Siegfried's funeral pyre; (d) the Rhinemaidens

   reclaim the ring; (e) Hagen drowns; (f) Valhalla and the gods are destroyed by fire. 

Twenty-eight decisive events in fourteen main subdivisions–two in each, on average: extravagant by Aeschylean standards, but still very few.