Harry travels back in time seeking confirmation that James was not as arrogant or vindictive as shown in Snape's memory, but nothing goes as planned... To make things even worse, Harry is Sorted into Slytherin and quickly becomes the Marauders' new target in a string of humiliating pranks. While he is forced to accept his father's true nature, an unlikely friendship develops.

After the fateful night on the Astronomy Tower, it becomes clear that Draco has been plotting to kill Dumbledore all year, and Harry wants to make him pay. A confrontation that begins with hate and ends with a kiss.