As How I Met Your Mother fans gear up for the show's final few episodes, more details have emerged about the March 3 episode, titled Vesuvius.

Barney Not Wearing A Suit In Series Finale?

According to International Business Times, the episode will feature some major drama between Lily and Robin, as well as Barney's indecision over picking a suit for his wedding day.

A promo clip for the episode shows future Ted telling his wife about a story that promises "intrigue, betrayal and lamps" before cutting to an image of a lap being broken by a hockey-gear clad Robin, who smashed a hockey puck into the lamp.

Sandy Rivers Returns For Series Finale?

Meanwhile, Ted will also try and help Barney pick a suit from his endless racks of them, potentially featuring some of his more memorable suits from over the years as well.

Perhaps the two most interesting spoilers revealed about the episode involve the return of the movie, The Wedding Bride, which saw the story of Ted being left at the altar by Stella in reverse, as well as the return of guest star Lucy Hale, who will be reprising her role as Robin's little sister, Katie.

In season 2 of the show, Hale's character guest-starred as Robin's sister, who was visiting in New York for the first time. While there however, she planned to stay with her boyfriend and lose her virginity, something Robin strongly tried to convince her not to do. As the gang tried to stop Katie from going through with it, they all reminisced about their own first times as well.

Watch a preview for Vesuvius below.

How I Met Your Mother airs Mondays at 8 p.m. on CBS.