In the game, we only see Frank after he has already died, having been bitten by an Infected and choosing to hang himself rather than turn. In “The Last of Us” Episode 3, however, we first get to see how Bill meets Frank and then cut to different stages of their life together before Frank becomes terminally ill, leading both to take a lethal dose of pills, thus ending their own lives.

Online, a lot of viewers are comparing the tragic but beautiful story of Bill and Frank to that of Carl (Edward Asner) and Ellie in “Up.” On Reddit, user u/Phenomenal_Don wrote, “This episode was an apocalyptic version of the ‘Up’ [o]pening montage,” with u/ManaRuthless responding, “I turned to my wife (mid sob) while we were watching and yelled ‘HOW DID I GET TRICKED INTO WATCHING THE FIRST 5 MINUTES OF UP AGAIN!?'”

On Twitter, user @IAmShaneNeedham wrote, “#TheLastOfUs episode 3 is an amazing short story akin to the opening of ‘Up.’ Just humans finding meaning within the greater struggle.” Sharing a similar sentiment, Twitter user @IiBarro wrote, “#TheLastOfUs episode 3 was seriously incredible. A heartbreaking love story that reminds me of that opening scene in ‘Up’, except somehow bleaker. Just beautiful.”

“The Last of Us” airs Sundays at 9 p.m. ET on HBO and HBO Max.

If you or anyone you know is having suicidal thoughts, please call the National Suicide Prevention Lifeline​ by dialing 988 or by calling 1-800-273-TALK (8255)​.