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Tane and Rebecca aren't sure what to make of a sequence of 1s and 0s, a message that looks like a random collection of alternating digits. As they decode it, slowly it becomes clear - the messages are being sent back in time from the future! But why? Tane and Rebecca follow the message's cryptic instructions, but it's not long before they begin to suspect the worst - that the very survival of the human race may be at stake!