It's about a lesbian entomologist down in the dumps from a breakup, as her ex couldn't deal with her fondness for and keeping of bugs as pets. One day she receives a mystery bug in the mail and, before she has time to bring it in to the lab to examine, she finds herself going on a date with someone new and nervously brings her home.
Unfortunately the mystery bug has gotten out, and sneaks a lovebite on her new girlfriend and everything gets weird from there.
It's such a strange episode. On one hand it's sort of heartwarming (it's a somewhat positive portrayal of lesbians!), and on the other it's a heaping dose of, what the fuck.
If you want a nice story about a couple anxious lesbians getting to know each other, watch maybe around the first half or so and stop there. If you want some classic horror monster stuff then watch the rest.