In the early 1900s, Miranda attends a girls boarding school in Australia. One Valentine's Day, the school's typically strict headmistress treats the girls to a picnic field trip to an unusual but scenic volcanic formation called Hanging Rock. Despite rules against it, Miranda and several other girls venture off. It's not until the end of the day that the faculty realizes the girls and one of the teachers have disappeared mysteriously.

Otilia Ruiz is the last link in a chain of women, marked by tragedy. Otilia looks desperately for an exit, but she doesn't know that, after entering the dark streets of Tierra Negra, anything will be the same anymore.

A documentary about the disappearance of school girls on St. Valentine's Day, 1900 at Australia's Hanging Rock.