Can anyone help me check this please?

Short summary
Peter, Ray and James are three best friends and each of them has big dreams. Unfortunately things turn upside down when one of them finds a jewelry box that belongs to the mafia's known as King and King. ( Is this sentence hanging?)

Long summary
Peter, Ray and James are three close buddies that work's in a waste recycling site. All 3 of them have big crazy dreams of achieving a break in the lives. Unfortunately things turn upside down when one of them finds a jewelry box that belongs to mafias King and Kong. Now, their lives are threatened when they become the target of the mafias who want their jewelry back. Will the two mafias retrieve back the diamonds?