In 2013, there are no highways, no I-ways, no dreams of a better tomorrow, only scattered survivors across what was once the Unites States. Into this apocalyptic wasteland comes an enigmatic drifter with a mule, a knack for Shakespeare, and something yet undiscovered: the power to inspire hope.

Season two finds the Crossing closed and each Howard stranded in the other's world. As a cold war escalates between worlds and deepens the divide, both men find themselves growing increasingly like the other.

JK Simmons主演的Starz科幻剧《相对宇宙 Counterpart》由Morten Tyldum当执行制片及执导首集，于15年时预订两季，每季10集。《相对宇宙》被形容为一部有抽象转折的间谍惊悚剧，讲述Howard Silk（JK Simmons饰）原本只是一政府机构的小角色，但发现原来局中是在守护一道能通往平行世界的「门」。而剧中通过他与平行世界的一个自己描述分括角色身份﹑假如事件﹑失落的爱等剧情。 Olivia Williams饰演Emily Burton Silk，Howard的妻子，一位神秘的女性，是首季故事的中心；Harry Lloyd饰演Peter Quayle，是Howard所在机构的局长，他仔细地规划自己的职业生涯，但同时也身陷间谍世界和双重生活之中。 Ulrich Thomsen將飾演Chekhov（代替演員Michael Nyqvist），Howard所在机构的行动部门主管，同时混和了哲学家和间谍的成份﹑Nazanin Boniadi饰演Clare，一个有神秘起源的年轻女子，她是驱动该季剧情发展的关键。 Nicholas Pinnock饰演Ian Shaw，一个积极的操作员兼监视者，负责确保两个维度之间的平静﹑Sara Serraiocco饰演Baldwin，一个神秘的刺客，当她暴露在另一边世界时，有了新的目的。

When a beautiful first-grade teacher arrives at a prep school, she soon attracts the attention of an ambitious teenager named Max, who quickly falls in love with her. Max turns to the father of two of his schoolmates for advice on how to woo the teacher. However, the situation soon gets complicated when Max's new friend becomes involved with her, setting the two pals against one another in a war for her attention.