Richard puts together the three Boxes of Orden, while Kahlan confesses him. However, Rahl’s Mord’Siths find them just as this happens. In the middle of the confession, Cara, the lead Mord’Sith, uses her Agiel on Richard. This combination of the powers of Orden, Confessor and Agiel results in a magical explosion that sends Richard and Cara 57 years into the future. Meanwhile, in the ensuing conflict, Zedd is killed by his own wizard’s fire, and Kahlan is taken prisoner by Rahl. When Kahlan learns from Shota that the only way for Richard to return is to replicate the magical combination of Orden, Confessor and Agiel, she decides to conceive a child with Rahl. Kahlan gives birth to a son, Nicholas, who grows into a merciless tyrant. In the future, Richard joins forces with Cara to destroy Nicholas. They meet up with Shota, who tells Richard about the magical combination required to travel back in time. Nicholas fails to deter Cara and Richard from returning to the present, where they save Kahlan and Zedd, with Richard finally fulfilling the prophecy in defeating Rahl. The Boxes of Orden are destroyed.
Episode descriptions taken from Wikipedia
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