Ep 21. Paradox Meltdown

Okabe is finally given a chance to save Kurisu, but doing so requires him to start over in the past with all of his memories intact. As he struggles to come to terms with the weight of his decision, he must also navigate the dangers and uncertainties of time travel in order to accomplish his goal. Meanwhile, his friends and fellow lab members must also deal with the aftermath of his decision, and learn to face their own fears and doubts as they try to help him achieve his mission. In this episode, tensions run high as Okabe's plan nears its climax and everyone on the team must make difficult choices in order to stay true to their desires and beliefs. Will they be able to succeed in their quest, or will they be doomed to failure in a world that is both uncertain and unforgiving?