Caleb and Moriah reach a huge milestone, whole Ben and Annie fail at their homework to switch roles in the bedroom. Erica and Thomas discover new ways to achieve orgasm, and Alanna finds her voice in the bedroom — inspiring Adam to ask a big question.
Erica and Thomas explore new erotic sensations with Sex Coach Caitlin V, while Rae and Ace shop for sex toys. Caitlin meets with a plus-sized fetish worker, and Caleb and Moriah have a date night, hoping to finally have sex again.
Sex Coach Caitlin V is surprised how kinky Ben and Annie get in session, and she reviews video of a "quickie gone wrong" with Adam and Alanna before asking them to strip and have some fun. Meanwhile, Ace admits her fantasy of seeing Rae with a butt plug.
Ben and Alanna enjoy exploring kinky sex and reviewing the tape with Sex Coach Caitlin V, new parents Caleb and Moriah seek Caitlin's help getting intimate again, and Rae and Ace straddle each other in a sensual feating exercise.