Abby and Barbara launch their blog, but it won't last long if they don't find a way to bring traffic to the site. As they look into potential influencers, a run in with Abby's ex and his new girlfriend sparks Barb's imagination. Delia's humanitarian efforts at Legal Aid send her on a stakeout with an abrasive but experienced new colleague. Phoebe gets in deeper with her seductive new friend. Jo consummates her flirtation with sparring partner Bald Eagle.

故事讲述一个迫降的外星人哈利(图代克饰)在接受了自己科罗拉多小镇医生的新身份后，本带着秘密使命来到地球的他，最终提出了人生中的重大课题：人类值得拯救吗？以及为什么他们在吃披萨之前要折叠？
　　上一季末，外星人哈利驾驶飞船飞出了宇宙，而本季中，他又将回到地球，却忘记了他是谁，只有阿斯塔能保护他的安全