Two generations from now, a climate change-ravaged Earth will depend on artificial oxygen-and a contamination to the supply looks to write man's last chapter. A single message is transported back to our present-"Send Ethan Whyte"-and how ordinary tunnel laborer Whyte (Kodi Smit-McPhee) is supposed to both reach and rescue the future fuels this stylish sci-fi saga from Australia. Ryan Kwanten, Leeanna Walsman, Deborah Mailman, Sana'a Shaik co-star. 114 min. Widescreen; Soundtrack: English.