The Phoenix's feather

Halloween, the one day magical creatures and spirits can enter the real world. Three wizards named Arthur, Vylad and Lukas decides that it's time to collect the rare flower called 'Phoenix's feather', which should only take about 30 minutes. But keep in mind that it's not only wizards that are allowed in our world, other spirits may find the living very interesting.
What will happen when the wizard Lukas gets trouble with his teleport magic, and can't get back home? Was it a good Idea of the danish mortal Mathias to take a short walk during this mystical night?