Seven School Mysteries part 9

Oliver continued looking around the first floor but suddenly saw something and spoke to the others through the live stream. 

"Guys, did you see that? I'm going to chase after it." 

After informing everyone Oliver started running after the strange thing he saw. As of now, he doesn't know if it was the floating orb, but it was something that shouldn't be here. Oliver suddenly felt his headache a bit and he closed his eyes for what he thought to be a few seconds but then when he opened them he was in a completely different place.