Five years after the fourth film, Manny and Ellie are preparing for the upcoming marriage between their daughter, Peaches and her clumsy, good natured fiancé, Julian. The wedding winds up thrown off when asteroids falls and attack the group. Taking refuge in the underground world the group finds that the asteroids that feel earlier are a forewarning sign of a far bigger event that will indeed wipe the group away unless they can journey to the earlier crash site and find the clue to stop the catastrophe.