Introduction

They live in a universe where every single person has his own soulmate who is the only source to keep them alive. The first touch that you share with them you'll immediately recognize that they belong to you, your heart will just know it. And afer your first touch you can't seem to live without them.

or

In a universe where soulmates are people's life source, Harry and Louis meet at a festival and lose each other in the crowd.
Now they need to find each other to survive.