Rescue from without
Hero’s don’t live in a vacuum, they are heroes because of us. They sacrifice their lives for us but they are not alone. Others should not stand idly by and watch the hero do everything. The Hero must do all the heavy lifting but his friends and allies should be what give him the slight edge over the enemy.
It’s function in a story is to take the hero as close to the moment of death as possible.
Keep in mind it’s not a random event, it’s an action from another character that’s been earned by the earlier actions of the Hero, it’s Karma, you do something good and something good happens back to help you when you need it.
Also, it seems to work best when it appears as a surprise rather than letting the audience know what’s coming. In Transformers 4 this stage was flagged early, dragged out and lost impact. Alfred Hitchcock often spoke about confusing the use of surprise and suspense in films, this is a beat where it is better served by surprise.
Star Wars –Just before Luke fires the shot to destroy the Death Star and Darth Vader is about to kill him, Han Solo appears and takes out the fighters attacking Luke. Han “You’re all clear kid, now let’s blow this thing and go home.”
The Avengers – Iron Man has made the heroic sacrifice and is falling to his death after taking out the enemy with the nuclear missile. Hulk saves him and cushions his fall.
Jurassic Park – Just before the Raptors kill them, a T Rex appears and kills the Raptors letting the heroes escape. This particular example is not true Rescue from withoug as there was no karma and takes it over the line in Deus ex machina which generally should be avoided but there are numerous incidences in film where it has occurred in film and has been successful
Raiders of the Lost Arc – The Nazis open the Arc and the Angels unleash the power of God on them. Indy is saved because he keeps his eyes shut.
Avatar – Avatar uses two, the first is for the overall battle between the soldiers and the Na’vi when Eywa sends the Pandorian wildlife in to turn the tide of the battle and again when Sully fights Quaritch in the final battle, Neytiri kills him with arrow.
Rescue – To save someone from a dangerous or distressing situation
Deliver, save, relive, pull through
Without – the outside of a place or area
Outside, external, extrinsic
How to use in your writing.
I think it’s important not to allow this stage to become deus ex machina. Focus on the hero being very active at this stage. The friend or ally who gives assistance is usually only just enough to give the hero the edge over his opponent so the hero can triumph. Don’t allow this outside help to replace the action of the hero.