"Jane is a serious scientist on the cutting-edge team of a bold project looking to 'de-extinct' the wooly mammoth. She's privileged to have been sent to Siberia to hunt for ancient DNA, but there's a catch: Jane's two 'tagalong' teen daughters are there with her in the Arctic, and they're bored enough to cause trouble. ... When [they] stumble upon a 4,000-year-old baby mammoth that has been perfectly preserved, their discovery sets off a chain of...