The Rebel alliance was reeling after the last instalment in the saga, the Empire driving them to the outer reaches, Han Solo (Harrison Ford) frozen and given to Jabba the Hutt and Luke (Mark Hamill) discovering the horror that Darth Vader (David Prowse/David Earl Jones) was his father.
But the Rebels are fighting back, Luke and Leia (Carrie Fisher) rescue Han and then link up with the regrouped Rebel fleet which is about to attack the second Death Star, the Emperor (Ian McDiarmid) himself is on board...
This is an all-action ending to the original trilogy of the film, which ties up most of the trilogy's plot threads nicely. However, it is also where the Star Wars franchise started to go wrong. The inclusion of the Ewoks can be a bit jarring, only the fact the rest of the story is taking place at the same time can make the Ewoks story tolerable. The big reveal that Luke and Leia were twin siblings does make their snog in the previous film interesting...
It is of course brilliant (though not quite as brilliant as the previous two films), and the perfect end to the saga. It is a shame they had to change that a few decades later.