In remote eastern Zambia, Joel Lambert goes in search of Africa's largest predators: lions. He's brought with him a unique, mobile laboratory - the pod - which he must get close enough to a pride to investigate lion's key predator attributes, including night sight. The world's best thermal camera allows him to see predators at night in spectacular detail, and he uses his military skills to stalk them in daylight too. During a thrilling night in the pod, lionesses shred the robust bite-force meter, and a big male tries many ways to get in. When a herd of buffalo appears, Joel witnesses the pride's hunting prowess.