十年前，春暖东京出现了一个不能解释的领域。从那片领域走出的人获得了一种特殊的超能力——可以随意夺取他们的性命。却如恶魔般从此失去了梦与心。那片神秘的区域被叫做地狱门，春暖而那些因此获取超能力的人被叫做契约者。美国的CIA，英国的MI6，日本的警视厅统统对神秘的地狱门进行了调查研究，甚至那个庞大的神秘组织潘多拉也开展行动，妄图消灭契约者们。知道真相的契约者们则团结在一起进行对抗。而另一方面，有着“黑之死神”之名的黑（木内秀信 配音）接受命令执行着组织的任务，同时也一直在寻找5年前失踪的妹妹。在执行任务的过程中黑偶遇之前的恋人琥珀（川上伦子 配音），发现眼前此人似乎隐藏着一些不为人知的秘密。究竟黑会不会知道琥珀真正的身份？他和妹妹是否能重逢？而人类和契约者的情况会如何发展？
回复 :Horse tries to recruit an army to defend Centaurworld, but no one wants to join. The herd visits the Horsetaurs' castle to see if they'll help.
回复 :This season began merely two whole weeks after the first season had ended, on April 19, 2008, with the airing of The Elite Guard, and ended on July 5, 2008, with the two-parter, A Bridge Too Close. The season revolved mainly around the Autobots in the aftermath of Megatron's return, trying to restore the city and their image. Meanwhile, Megatron, Lugnut, and Blitzwing have captured Prof. Sumdac in order to build a Space Bridge, hoping to use it to conquer a weakened Cybertron from within. A sub-plot also focuses on Sari as she searches for her father, while learning that there is no record of her existence of any means. Also, Blackarachnia (originally Elita One) has been reduced to a minor recurring character, only appearing in one episode of the entire season (Black Friday).
回复 :凪宗一郎（保志总一朗 配音）和卜比牧原（三木真一郎 配音）的到来让本来平静的统道学园鸡犬不宁。虽然统道学园是一所武校，但学校提倡平和理智的武道，反对无因的暴力，而宗一郎和牧原两人此次的目的却是征服这座学校。结果可想而知，宗一郎被前来的柔剑部部长枣真夜（久川绫 配音）及高柳雅孝（关智一 配音）一脚踢飞，倒霉的他掉入了刚洗完澡的枣亚夜（茅原实里 配音）身上，没想到枣亚夜对他一见钟情。于是，有着女性恐惧症的宗一郎在统道学园的快乐生活开始了。 而随着校园生活的推进，一些被称为“柱”的标志逐渐浮出水面，这些标志分别刻在谁的上？又代表了什么？宗一郎决定一探究竟。
