Time Ripples/Royal Death

The Doctor was relaxing in the Zero Room while Nyssa was setting up the coordinates. Suddenly, the TARDIS received a Distress Signal.

“Doctor, come quick!” Nyssa shouted.

The Doctor rushed to see what was going on. It was a Distress Signal alerting them about a time ripple.

“What is it this time?” Nyssa asked.

“Something changed history. We have to go there and fix it.” The Doctor replied.

“When did it happen, Doctor?” Nyssa asked.

“On the 4th of May, 1471. The day the Battle of Tewkesbury happened. It killed almost 3.000 men, including the seventeen-year-old Prince Edward of Lancaster. I think it must have something to do with him.” The Doctor replied.