Fists Fly in New Clip from Kevin Smith's Supergirl Lives Episode

The yellow sun giveth power, and the red sun taketh away.

The CW has released a new sneak peek from Kevin Smith's "Supergirl Lives" episode, and it features Kara (Melissa Benoist) and Mon-El (Chris Wood) getting stripped of their powers when they get transported and stuck on a planet with a red sun.

When Kara and Mon-El go to the spot where a woman went missing, a portal to another planet appears and pulls them in. Kara is the first to arrive on Slaver's Moon, and as she's taking in the alien surroundings, an unfriendly, gun-toting Maaldorian—a lizard-like alien species—gets off the ground and points its weapon at her. Thankfully, Mon-El emerges from the portal just in time and uses the fight-training he received from Kara to subdue it.

KEVIN SMITH DIRECTS; ROULETTE RETURNS — Kara (Melissa Benoist) is moved by the story of a missing woman named Izzy (guest star Harley Quinn Smith) and decides to investigate despite Snapper Carr's (guest star Ian Gomez) order to leave it alone. Kara takes Mon-El (Chris Wood) with her to the last place Izzy was seen and the duo find themselves thrust through a portal to another planet, Slaver's Moon, where the downtrodden are sold as slaves. The leader of the trafficking ring is none other than Roulette (Dichen Lachman).

To make matters worse, Slaver's Moon has a red sun, which means Kara and Mon-El are stripped of their powers and stuck on the planet with no way home. Meanwhile, back on Earth, Alex (Chyler Leigh) blames herself for Kara's disappearance, fearing she's become too focused on her new relationship with Maggie (guest star Floriana Lima) and too complacent in watching out for her sister.

Kevin Smith directed the episode with story by Andrew Kreisberg and teleplay by Eric Carrasco & Jess Kardos.

MORE: White Martians Attack in Synopsis For Supergirl's "The Martian Chronicles" / Release Dates, Director Set For The Flash/Supergirl Musical / The CW Releases Midseason Sizzle Reel For Flash, Supergirl, And More / Kevin Smith Teases Maaldorians On Supergirl / Kevin Smith Returning to Supergirl For Another Season 2 Episode

The midseason premiere of Supergirl — which is titled "Supergirl Lives" and directed by Kevin Smith (Chasing Amy) — will air Monday, January 23 at 8 p.m. ET/PT on The CW.