Join Chris Packham on an epic four billion year adventure travelling through time to uncover how life on earth evolved. His mission: to answer five questions about five iconic animals created by the unstoppable force of nature. On the journey, he discovers how the elephant, ostrich, bat, dolphin and horse came into existence from the evolution process. The driving forces – growth, reproduction, feeding, intelligence and movement – are behind some of the biggest stories ever told on earth. The quest reveals pivotal breakthroughs as Chris guides and participates every step of the way with his trademark warm, curious and intelligent storytelling. The series recreates moments through stunning visualisation taking viewers back to the ancient history of the natural world in cinematic scale. Every episode returns to the original animals we know today and reveals how evolution is not an abstract notion, but a tangible concept that never stops shaping life on earth.