Harry has an unexpected partner as he tries to infiltrate a military base to find his alien baby. Meanwhile, Asta and Dan help D'arcy to recover and realize, that she's unwilling to leave her new comfort zone.

Harry tags along on Ben, Kate and Max's family trip, hoping the mayor will lead him to answers.

Harry hits rock bottom, Kate begins seeing the truth, and Mike helps Liv face her greatest fear.

Harry and Asta team up with an unlikely ally to try to save the Earth.

Harry and Asta work together to try and get something Harry desperately needs.

Harry and Heather reunite, but their relationship is more complicated than ever.