You're part of a team of brilliant scientists working on the super secret lab: CERN. While experimenting with teletransportation your team came across a wonderful discovery: portals to new dimensions!
Just imagine! Once a portal is open a whole new magical dimension is suddenly very close. All you need to do is take one step forwrd and you're there.
The problem is... The crazy wild creatures from those other dimensions can now walk in. Oh no!! Close the portals NOW!