Welcome aboard The Sacramentum. New recruit Jamie Walsh gets a crash course on ship life while trying to keep a low profile as he investigates what happened to his missing sister.

After shocking news concerning a chief suspect, Jamie and new friend Vivian work together to discover the identity of an officer onboard who was connected to his sister.

It’s a big day on the ship - the captain’s ball, attended by the VIP guests. Jamie shares an intimate moment with Olly, while Vivian cosies up to Lily, one of the guests, risking big repercussions if she’s caught.

Jamie gains an unexpected ally on board, who promises to investigate from the inside and get the answers he’s desperate for.

While Vivian and Lily’s relationship reaches new heights, Jamie finds himself in a terrifying situation and must use all his courage and strength to escape.

Jamie finds himself in a lethal dead end with seemingly no way out. But after a surprise intervention brings some momentary respite, he learns that others are in peril.

Back on land, Jamie and Vivian are fighting hard to expose Velorum. But the walls are closing in, and they’re forced to take desperate measures. In a deadly gamble, they set their sights on Velorum’s newest venture – an exclusive 'wellness' festival in Slovenia.

A bombshell reunion separates Jamie from his friends and puts him in grave danger, while the rest of the gang get to grips with the eccentric festival. Soon, everyone finds themselves drawn into an unwanted encounter with an old foe.

As the past comes back to haunt him, Jamie goes rogue and makes a terrifying, inhuman discovery. Meanwhile, an old adversary makes their

presence known.

After the group decide to go their separate ways, Jamie and Vivian must delve deeper to find the missing festival staff, forging new alliances along the way. Meanwhile, the gang on the road become lost and find themselves caught up in a terrifying siege.

As devastating news reaches Jamie and Vivian, their morals are put to the test as they face what it will take to win the battle against Velorum.

As the full horror of the festival becomes clear, there may be no going back for Jamie when he’s faced with a final, nightmarish choice.