Hiro, like a true dumbass, opened a safe against his dad's wishes, and now some French chick with super speed has a portion of a formula which maybe the key to giving anyone abilities. He also traveled to the future, where he saw Ando kill him with lightning. Nice power- I knew I liked Ando for a reason. Hiro was acting kind of stank to Ando ever since, by now he should realize that altering his actions is what creates his enemies in the first place! Must we revisit the Adam debacle. Also the world (well Tokyo at least) was being destroyed. Dr. Suresh discovered that abilities are connected to adrenaline, and by using Maya's hormones he gained heightened senses- AKA Spiderman. However, it's backfiring and he's becoming a monster. Remember that movie, The Fly? Yikes! Now to the main event.
Future angsty Peter went back to the past to save Claire and the future from the witch-hunt hell that it became. However as present day Mama Petrelli pointed out, he created a Butterfly effect that caused even more harm. Claire was caught by Sylar. Now Sylar can heal. After letting her live, he revealed that she was "special" and could probably never die. Then Claire realized that she can't feel (pain at least). So, now she has this I'm-not-human complex. Hiro will probably have to find Claire because his dad fortold that she's the only one who can prevent the end of the world if the formula gets in the wrong hands. Which it is- thanks, Hiro. Mama Petrelli revealed her power of foreseeing the future- however she is able to step inside her visions. Much like Peter did in season one when he realized he was "the bomb". Sylar tried to invade Level 5 for a super power buffet which was thwarted by Elle when he tried to take her power. The blast left Sylar badly injured and the Level 5 inmates escaped including the body present day Peter is trapped in and Noah Bennett. Mama Petrelli had witty banter with future angsty Peter the whole time, and now that Bob (Elle's dad) is dead, she runs "the company". After firing Elle, she approaches Sylar and tells him she can give him a mother's approval- like he always wanted. Only to then proclaim that she IS his mother! WHAT? To be continued... and I love it.