As the Salvatore School prepares for its upcoming ‘80s-themed decade dance, Hope and Lizzie find themselves trapped inside a never-ending labyrinth with a monster on their trail. Meanwhile, Josie and Landon decide whether or not to take their relationship to the next level. Elsewhere, MG turns to Kaleb for advice on what to do about Sebastian, while Rafael struggles to adjust to his life back at the school.

When a truth-seeking monster arrives in Mystic Falls during Commonwealth Day, Hope and Lizzie fear that the secrets they've each been keeping have made them targets. Meanwhile, MG, Kaleb and Kym seek out an unlikely ally, who may have knowledge on how to take down the latest monster. Finally, Freya receives an unexpected visit from one of the Salvatore Students.

After deciding that leaving town would be for the best, Hope gets pulled back in after Josie comes up with a risky plan to close the Malivore portal. Elsewhere, Alaric and Dorian make an alarming discovery about Professor Vardemus, while Rafael learns some upsetting news about Landon's future.