Michael Lee West’s Mermaids in the Basement finds screenwriter Renata DeChavannes grieving from the recent loss of her mother and stepfather in an airplane crash. She retreats to her family home in the Outer Banks where she eats uncontrollably. While she is buying her movie-producer boyfriend a sweater in a little clothing store, she happens to see the tabloid article telling that her absent love is rumored to be dating his latest movie’s star in faraway Dublin.
Devastated, her drinking, too, begins to get out of control. One night, a drunken Renata has a beach bonfire and burns her manuscript. When she wakes up not knowing what she has done, she looks through all of her drawers to find it but instead discovers a letter from her mother instructing her to contact her paternal grandmother in order to find out the stories of her mother’s “dirty deeds.”