Scotty is forced to choose between sister Rhonda and Operation Saviour when he spots a crucial error in the plan to save the world. With just two weeks to go until impact, Messiah hunters Celine and Jude investigate a marriage cult on a holiday islan... (more)d. Plus, Ariel embarks on a threatening mission. And, eager for answers, Jamie travels with Dave to what he believes is Layla’s home, where the danger proves far from over for him and those close to him.