When a plane disappears off the radar and its pilot is nowhere to be found, it's up to Steven and Samantha to locate the man and the dangerous bomb he has with him. Traveling to Russia, the Blooms team with Hoyt and meet with some unexpected challenges in their quest to complete their dangerous mission. Meanwhile, Shaw wonders how much time he has left before the Blooms become suspicious of his underlying motives, and Lizzy takes charge with a client.