Disclaimer
I know the civil war event is planned for the future and the rest of the story is being written before hand, however, I would like to start this topic to brainstorm the plot of the civil war arc. The story bible does not contain a large amount of information on the war and I decided to start brainstorming up the rest.
This topic is meant to bring up ideas that TTV can use if they do not already have a plan for the civil war.
The sides
Ok so the sides are those of the G1 civil war, with the elements of Ice, Wind and Stone against Fire, Water and Earth. This pits the regions of Ihu, Kanae and Motara against Mangai, Naho and Tiro, which they will be referred to in explaining the events of the war.
In G1 the original war began from Ta and Po matoran, this was will instead begin with Ihu and Mangai, I do not know what event will start the war as the story bible has a little bit of content here so I won’t plan a starting event. I will however propose that Ihu and Mangai mutually declare war rather than one on the other.
Events edited due to new map
The map, courtesy of @UltimateMustacheX:
The Beginning (sort of)
So primarily, Ihu will oppose Mangai and Mangai will oppose Ihu, the other regions will initially be a bit shocked that they’ve actually declared war and will be a little cautious in any trade or supply to either region but trade will still continue even if it is reduced in some cases. I am still going off the assumptions of the map geography.
This map is quite interesting as was it’s predecessor, Mangai and Ihu share a border and both have a border with 2 opposing powers, I like this. Kanae and Tiro are a little off to the side and they do primarily end up as reinforcements so this is ok.
However I think that the island map may change in future so hopefully the cast see this and confirm/deny the map design or post an alternate design. I believe in one episode Var said that Kanae my simply just rotate around the main island as it floats like an asteroid belt ( the belt is my idea) so again, this list of events may not be fixed canon.
The events
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Ihu and Mangai both are at war with each other. All other regions are neutral but support and supplies still can come from any region initially.
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Ihu has a good diplomatic standing with Motara (strengthened by the fact their Toa are good friends) and so Ihu calls on that friendship to assist them against Mangai, Motara accepts.
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Ihu plans to cross into Naho to trade and to meet or move military forces from Mangai. They don’t exactly respect Naho as they focus too much on the threat of Mangai that tensions begin to rise between Naho and Ihu as the instigators of this disrespect. Naho slowly builds a grudge of Ihu.
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An incident occurs (something kid friendly such so it can work in Lego) such as a village being destroyed or damaged as a result of the Ihuians having to travel around the central volcano for surprise attacks through Motara or battle on the border.
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Naho opposes Ihu and openly supports Mangai, Ihu is now cutoff from the eastern side as they move their troops to the border and start constructing water based defenses and strongholds and reinforce the Mangaian front…
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The construction of the Naho defenses is protected solely by elemental advantage until they are completed.
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Ihu tries to persuade Kanae or Tiro to assist but both remain neutral.
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Mangai has held out quite well but sees that Naho is faltering a little under raids and so decides to send shock troop Mangaians to help them. The leader of these shock troops who is a major political leader in Mangai is captured and sent to Motara.
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Kanae begins to assist Motara as Ihu’s air based raids are being sent back by attack threats. Motara begins supplying Ihu with additional air support.
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The Kanae leadership realises the wealth they can gain from assisting Ihu and Motara and continue supplying them and this leads to Kanae openly supporting Ihu.
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Under the strain of 3 regions attacking them and the lack of supplies from being cut-off from Kanae (having the primary transport businesses with the Gukko), Mangai starts to crack, their warriors are tired and they are running low on supplies.
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Tiro comes to the aid of Mangai during an attack from Motara, rushing past Motaran towns and villages and rescuing the Mangaian shock trooper in the process. Think Rohan from LOTR2, the bond formed by this aid will remain even after the war is over.
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The island is now truly split and at a stalemate, Ihu having Kanae’s supply but Mangai having Tiro’s resources, both sides are now on equal footing.
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Tiro is beginning an advance on Motara from the east as Mangai pushes from the North, Motara is the field of the final battle, if Motara falls, the momentum will carry them straight to Ihu.
The ending
The Toa in all this may not even be present, off fighting another evil and perhaps we return to the middle of the war, hence our first wave sets and then the ending of the war with second wave sets. They will return home a little shocked I suppose, I’m not a massive fan of them participating in the war defeats the whole unity thing.
The end of the war will occur with an apocalyptic disaster (looking at you Makuta) that will cause all regions to set aside their arguments and follow the Toa to defeat this evil. Upon the defeat, the Toa (who somehow know what caused the original rift between Ihu and Mangai) explain that they were tricked into this war but can now rebuild “united in duty…” etc. A cheesy and happy ending but considering it may be at the end of the initial 3 year stretch it fits, if however it is in the latter years, perhaps an outside force threatens the now united island.
Conclusion
Anyway, this is just my thoughts on the civil war and I would like to remind you it is based on the island geography. If anyone has any suggestions on events or ideas for the war, I’d be more than happy to hear them.
Comments and criticisms are more than welcome 
Edits: Changed topic details to accommodate map changes.
