A serial killer strikes back in London after laying low for three years. Amar, the investigating detective has since resigned from the job but is brought back to crack the case. Amar decides to return and resolve the case once and for all.

When photographers Erin and Patrick are brought aboard the ship with their young son Lukas, they unleash a series of events that entwines their family with the ship’s dark past. As the terror unfolds around them they begin to realise there is more to this sumptuous ocean liner than meets the eye: its remarkable legacy masking violent secrets.

In 1970s Rome, a filmmaker gathers actresses for a new project, which triggers memories of his past working in a Roman costume shop, run by Alberta and Gabriella, navigating personal and professional challenges while creating costumes for a major film.