Five Elements #1

this book is mainly about 4 friends who encounter an under ground murial they find an emerald tablet saying to form a pact each person must place a drop of blood on one one part of the tablet each part a different element fire,air,water, and fire they think it is a prank ,but they decide to do it because it can be a blood pact to bind their friendship forever little did they know that the next morning their lives will be changed for ever.