Ep 1. The Best Man

Ted is the best man at the wedding of his friends, Barney and Robin, and he is determined to make sure everything goes smoothly. However, as he tries to wrangle the groomsmen into shape, he realizes that one of them is his ex-girlfriend, and he begins to second-guess his selection. Meanwhile, Marshall and Lily have become parents and are struggling to balance their new responsibilities with their old lives, and Barney is hiding a secret that could derail his relationship with Robin. As the big day approaches, everyone is on edge and tensions are running high, but they all know that no matter what happens, they will always have each other to lean on.