Matilda West, a beautiful and brilliant scientist, materializes in a parallel dimension and is confronted by a woman with her face – her doppelganger, hardened soldier, Dark Matilda. When the two women touch, they vanish and are transported back to Matilda's lab. Driven by her desire to advance the science of teleportation, Matilda has caused friction amongst her colleagues and strained her marriage. Her strange journey – and the appearance of Dark Matilda – is proof of her success. But life and relationships were different in Dark Matilda's post-apocalyptic world and she begins to connect with her parallel counterparts. When both Matildas get ill – verification of a theory that life from different dimensions cannot co-exist – it becomes clear that one must return...