Sick Girl

Ida Teeter, a shy entomologist, receives a large unidentifiable mantis-like insect in a mysterious package and names it Mick. She begins to study the creature, keeping it in a tank in her home. Mick somehow escapes and attacks Lana Beasley's pet dog, killing the animal.

Ida asks Misty Falls on a date after being drawn to her mysterious charm. Misty is introduced to Betty and Ida's apartment, and Ida explains that the insects are kept hidden away in the bedroom. The two begin to feel a growing connection.

That night, Misty stays over and the two grow closer. Ida secretly offers Misty a pillow concealing Mick, hoping to share a quirky gift with her. Misty thanks Ida, but Mick's proboscis nips Misty's ear, a bite Misty dismisses as nothing.

Misty becomes increasingly fascinated with Ida's insect collection and begins exhibiting unusual tendencies around the bugs. She spends more time at the apartment, edging closer to Ida and the stashed insects. Ida grows uneasy about Misty's mounting interest.

Ida receives an almost apologetic letter warning that the insect could be dangerous. She reads it with growing concern as Misty becomes more involved with Mick. The warning does little to slow Misty's fixation.

Ida and Misty share a passionate kiss in front of landlady Lana Beasley and Betty, shocking the neighbors. Beasley bans them from the apartment and gives them one week to move out. The relationship is under threat as the deadline looms.

Misty recounts a dream in which she is a fairy and Mick forces its proboscis into her navel, seeding blood and 'its juices' inside her. Ida grows more unsettled as Misty's behavior becomes increasingly erratic. Misty guards the pillow with Mick inside, hinting at the insect's grip.

Max phones Ida to explain Mick's biology: the insect nests in birds and other hosts, behaves as a parasite, and inseminates the host's reproductive DNA so the insect can reproduce. Ida struggles to believe the explanation while Misty appears more compelled by Mick. The danger to both women becomes clearer.

Misty undergoes a horrifying insect-inspired metamorphosis, gaining insectoid eyes and tendrils. Beasley confronts Misty and, terrified, falls down the stairs to her death. Ida arrives to witness the aftermath in shocked silence.

Misty reveals that her father, Professor Malcolm Wolf, Ida's former tutor, sent Mick to Ida to manipulate their relationship and keep Misty in love with Ida. She also hints at her own secret and the insect's hold over both of them. The revelation rocks Ida to her core.

Max bursts in to help Ida, but Misty kills him. Mick immediately sinks its proboscis into Ida's ear, resuming the insemination process and cementing the infection.

Some time later, Ida and Misty sit together with large pregnant bellies, joking about their condition as Mick continues to inseminate them through their ears. Their grotesque bond has become a lasting, terrifying fixture of their lives.