"The robbing of a local superette and the sinking of the Herald of Free Enterprise are somehow connected."

Superette Anna

March 6, 1987. A masked guy robs a local superette, but finds out there's hardly any money there. As the cops are on their way, he takes the owner and his family hostage. Meanwhile, the Herald of Free Enterprise is quickly sinking - but what's the connection and how will it affect the robbery in place?