The year is 2022, and after an unlikely event, only one man is left on earth: Phil Miller, who used to be just an average guy who loved his family and hated his job at the bank. Now, in his RV, Phil searches the country for other survivors. He has traveled to every city, every town and every outpost in the United States, Mexico and Canada, and has found no one, which leads him to the painful realization that he is almost certainly the last living being on the face of the earth. After discovering hidden dangers in their mansion, the group decides to part ways with their home in Zihuatanejo and embark on a new destination. However, Tandy has second thoughts about what they may be leaving behind. The gang ventures out in search of what they think could be a new sign of life, but are surprised at what they actually find. Meanwhile, Todd makes a few morbid discoveries of his own back at the mansion. A thermal heat detector reveals a potential sign of life outside of the Zihuatanejo village, but Tandy doesn't want the group to split up to go investigate. Meanwhile, Todd and Erica have trouble seeing eye-to-eye. Tandy wakes up to a shocking discovery that is positive for everyone in the group, but it throws Todd into a spiral. Meanwhile, Todd and Erica share an emotional roller coaster. While Todd butts heads with Erica, Melissa is determined to form a strong female friendship with her. Meanwhile, Carol grows suspicious that a new stranger could be living nearby.