Hiccup and Toothless reunite to remind both their kinds of the inseparable bond between vikings and dragons.

Over the holidays, Ned (Bryan Cranston), an overprotective but loving dad and his family visit his daughter at Stanford, where he meets his biggest nightmare: her well-meaning but socially awkward Silicon Valley billionaire boyfriend, Laird (James Franco). The rivalry develops,and Ned's panic level goes through the roof when he finds himself lost in this glamorous high-tech world and learns that Laird is about to pop the question.

70-year-old widower Ben Whittaker has discovered that retirement isn't all it's cracked up to be. Seizing an opportunity to get back in the game, he becomes a senior intern at an online fashion site, founded and run by Jules Ostin.