Plot

This is my attempt to divide up the plot. The screenplay has a total of 368 Scenes, but these can be very clearly divided up.

Scene 87-93 - Airport Scene / Waveform analysis Matching
Scene 94 -96: Thermos Experiments

192-194 : Hector creates a tube shape using flowers.
==== Euclid masters the PETAL ASSEMBLY which becomes known as a flower. By inserting flowers (which are like tubes), this becomes known a a flower limb. Marcus reveals he knows how to feed the maker and devises a rota. The flower limb is revealed to be moving of it's own accord. ====

203-206: It's revealed that the kids are now paying each other to use the maker.
Hints are dropped regarding the sawdust.

208 - 214: The boys discover the alternating petal color design
...makes more agile creatures

241 - 253: Choruses are fed wrong
Marcus dismisses the need for sawdust and fills the maker with detritus from an orange bucket. This fires up the maker and makes it perform faster. By 247, the mahogany chorus has doubled in size and become more agile. The chorus shows an interest in collecting decayed funnels, which it grinds and feeds the circle frond with. The chorus becomes harder to control and more focussed on collecting discarded funnels.

254 -264 The Plywood chorus attacks Marcus & Javier, and escapes (256).
We see that Olivia has been attacked for her funnels, by the Plywood Chorus, who later deposits bloody funnels into the Circle Frond. Euclid returns the circle frond into the governor and they dispose the Mahogony Chorus, Plywood Chorus and the Maker, all down the BIG HOLE.

265-278 : The maker returns
By 274, it is revealed that Graham & Samuel have the two fronds and the maker and are using it again to create flat discs, funnels and flowers. Carter, Graham & Samuel get back into building. By 278 it's revealed that the choruses hand has an advanced level of dexterity.

279-282: Frond three
Carter reveals the third frond, which it is revealed, produces ANGULAR BOWLS, known as PLATES. Six handle-shapes, made out of flowers, are attached to the PLATE. In attaching handle six, the plate finally comes away from the third frond. They make three PLATES and attach them to a chorus. When attached, the PLATE leaves behind a TUBE. The chorus builds a platform going up a cliff using the TUBES. Euclid & Carter decide to scale the platform.

The three fronds are shown to be connected and growing between them is a Hexagon.

283 - windy Flume
Euclid & Carter find themselves outside a windy FLUME, which is cold inside. It is revealed later that it was built by the Chorus.

284 - Hexagon Growth
The hexagon is revealed to have doubled in size

285 - 293 : More Flume Building
A chorus starts building another Flume. Out of nowhere, two previously unseen Ape choruses appear. The two apes connect themselves to the Circle Frond. The apes and choruses fight. The apes lose the frond. Graham & Samuel take the Frond into the flume. Euclid finds himself in the flume fighting an ape. Left ape gets jammed in the flume. A 6 foot BLACK SPHERE appears around the trapped limb and cause explosions that eventually destroy the trapped apes.

294-295 - New Choruses Built Badly
It is revealed that Hector has unsuccessfully tried to create choruses in a new way, but failed.

296 -297: The Break in
Euclid, Graham & Carter break into Albert's barn by wedging a limb in the door and then controlling it to break the barn door open. Marcus, from a distance, watches Euclid release a chorus from a cage. Marcus gets the chorus to attack Euclid and Graham.

298 - 299: Ape Bits
Samuel, Carter, Euclid & Graham collect discarded pieces of Ape from the Flume area. Carters damaged chorus takes collected limbs and puts them in a shaft.

300 - New Circle Frond appears.
Graham & Samuel reveal that the hexagon has transformed into a new Circle Frond. They hide it in a cave under a blanket.

George & Graham, who have the original Circle Frond (with an Apes arm still attached) believe the original frond to be broken.

301 - Arguments
The group seems to have split into: After an argument, Marcus threatens to never refill the maker.
 * Marcus & Javier (GRP1)
 * Carter, Euclid, Graham, Vaughn, George (GRP2)

Carter asks Euclid if he thinks they can work out how to feed the maker, but E doesn't think he can.

302 - 305: Empty Frond
GRP2 still have the Original Circle frond, but it's empty. Carter puts the frond in a metal box (not the Governor) and locks it. The boys devise a system to securely transfer the frond via a messenger who is trusted by neither the sender nor the recipient (a simple demonstration of "three-pass" cryptography).

306-310: Cylinder
GRP2 rifle through the ape pieces until they find and break open a Cylinder - they become surprised by what they see.

311 - 314 Collecting the governor
Euclid & Samuel are at the big hole, which now appears to have  RAILINGS and SCAFFOLDING, allowing you to climb up and down it. They go down to retrieve the Governor. By 313, Albert apologises to Euclid for stealing the Frond. In 314 they build an Ape-Chorus hybrid. The controllers return to the cylinder and it snaps shut.

315 - 318: Hybrid chorus is demonstrated.
Another group that created the ape choruses is revealed. Carter reveals a set of photos showing PHOTO: We see one LARGE TENT in the middle and SEVERAL SMALLER TENTS surrounding it. CAMPERS walk to and fro. PHOTO: CHORUS APES return from the outskirts in pairs and are directed by Campers into a PEN where ANOTHER 20 are kept.

319-323: Tunnel building
The boys, assisted by many choruses, build a large circular tunnel in the earth. The tunnel is filled with Flumes. The boys are seen producing from several sets of fronds. They create a chorus with powerful limbs. Albert, Hector and Graham harvest another Circle Frond. Graham reveals that the other group's Choruses didn't have plates.

Hector suggests they can use the third frond as a bargaining tool, reasoning that as they don't have plates, they don't have the third frond.

324: Entering gbpa camp
Samuel enters the enemy camp, and manages to enter by completing the four hexagon code in sand, turning "o o o o" into "g b p a". A big battle commences in which the kids mostly beat the other group and their apes into submission, except for Carter, who gets killed by an ape in scene 345. Euclid submits his controller to the other group at this point, shouting "Take it".

348: Euclid is dragged away by a large chorus.
The circle recedes far behind them. The adults are still corralled by Choruses. The BLACK SPHERES have begun to shake the ground and BLOW UP LARGE CHUNKS of earth all along the perimeter.

PAN OVER TO THE CIRCLE: We hear the tiny dull thuds of the Black Spheres far off, like watching a firefight from a mile away. Then the circle BLOWS COMPLETELY. In an instant, everything inside it is expelled and then brought back with the force of a small nuclear bomb. Euclid sees the whole scene in a state of suspended animation.

351: The survivors are revealed as:
Euclid, Albert, Graham, Vaughn, Hector, George, and Javier Who have built a dragon chorus.

Scene 368: The Big Reveal
We see many destroyed worlds covered in Flumes, all inhabited by different chorus creatures.