"How I Met Your Mother" season 9 has only 3 episode left! New spoilers reveal that Marshall will punch The Captain and Robin's mother will arrive at her wedding to Barney in episode 20. Watch the promo video below!

The synopsis for "How I Met Your Mother" season 9, episode 20, titled "Daisy," reads: "Marshall enlists Ted and Barney to help him find out where Lily went when she walked out in the middle of their fight."

The promo video reveals that Robin's mom has finally made it to her wedding to Barney, but the groom is dealing with a serious case of anxiety brought on by the thought of meeting his mother-in-law!

Speaking of family, Chris Elliot will return to guest star as Mickey, Lily's dad, in "How I Met Your Mother" season 9, episode 20.

Meanwhile, a quick clip in the promo video hints at a spoiler that Marshall is not happy with the Captain - he punches the Captain in the face! Did he have something to do with Lily walking out on their fight?

Other guest stars in next week's "HIMYM" episode include Marshall Manesh as Ranjit, Suzie Plakson playing Judy, William Zabka as himself, and Robert Belushi as Linus, reports Hollywood Hills.

"How I Met Your Mother" season 9, episode 20 is scheduled to air on Monday night, March 10 at 8/7c on CBS.