Albus Potter and the Unicorn's Core

Albus Severus Potter is about to start at Hogwarts with a lot of weight on his shoulders. Afterall, being Harry and Ginny Potter's son comes with a lot of pressure and high expectations.
But Albus isn't the only first year with a lot of pressure. Scorpius Malfoy is also starting his year. Is the pressure from his father, Draco, just too much? Or is it all in his head.

Something is happening in the Forbidden Forest. With the professors not seeming to care to much about it Albus Potter and his friends investigate. Something is slaying the Unicorns. But who would slay this many unicorns? Why?