Excitement is high as a group of friends return to their home town for a school reunion. Inseparable in their youth, the group haven't been together as a whole for nine years. Now, as they turn 30, there is intrigue and anticipation about renewing old friendships, and for some, tension over past secrets shared.

After a night of partying, events take a sinister turn when one of the gang is found dead.

The remainder of the group and their friends and families become embroiled in a murder investigation. Friendships are challenged and loyalties torn, as they set out to discover who amongst them is a killer.