Monica Rainbow has recently graduated and has found a job as a Greek substitute teacher in a small university in the American province.

They booked her into a small family-run boarding house run by mother and daughter.

Wendy, the daughter, is also a student of the class that will follow Monica the following day.

The young woman mentions the teacher that Monica has come to replace, Marie-Louise, but the reference makes the teacher, only a few years older than the pupil, suspicious.

Monica is slipping into an ambiguous and shady realm, full of secrets and with undefined contours, which will change her future forever...