Where can I watch “Happiness” Season 1 Episode 3 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

Do I need to watch earlier episodes before “Locked In”?

Watching earlier episodes in season 1 helps you follow the plot and character arcs leading into this episode.

Watch Happiness Season 1 Episode 3 Online

“Locked In” — Watch "Happiness" Season 1 Episode 3 online in HD for free. Check streaming providers, cast, and episode details.

Nov 12, 2021 Season 1 Episode 3 62 min TV-14

7.7 ★ ★ ★ ★ ★

6 votes

Happiness Season 1

← Back TV Series

Where can I watch "Locked In" online?

You can watch it through the button below, and it is free.

▶ Watch This Episode Now

Season 1 Episode 3 — Aired on Nov 12, 2021 • runs about 62 minutes.

Notable cast/guest names in this episode include Han Hyo-joo, Park Hyung-sik, Joo Jong-hyuk, Lee Ju-seung.

This page includes 4 official still(s) (when available) plus legal availability links.

Looking for “watch Happiness Season 1 Episode 3 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Sae Bom thinks Tae Seok is hiding something and feels uneasy about it. The new apartment is peaceful compared to the unrealistic dormitory. Sae Bom and Yi Hyun return to their everyday lives. Although it doesn't seem right, they try their best to adapt. However, late in the night, they hear a constant banging from the unit above them.