here is what my broken braincells have managed to scrap together for ideas:
Roan, a worker drone receives a letter from her long deceased human partner, telling her that they are at the abandoned town of Drone hill, which had been left in shambles with little citizens after a 'incident' (reference to SH 2). she hitches a full bus, only to wake up with her being the only one in it, the bus somehow working without a driver. she checks the square, and meets Serial designation R, a male disassembly drone whose purpose is to protect the town from the strange creatures that are starting to plague it. They find a 9-year old human child (Lenni), who blames Roan for her partner ( Kamo) 's death, Roans partner being " Lenni's brother". although annoyed by Lenni and suspicious of R, the trio discover X, a drone with a human partner has an uncanny resemblance to Kamo. just as it seems like they can find out more, A cyborg-creature with a triangular metal helmet beings on their tail in hot pursuit of them.