3. I'll Light a Candle for You Every Day

Fiona reconnects with Craig Heisner, her high school crush who is now married. After meeting with him, Fiona considers if she should go forward in a new relationship. While riding the "L" train home, she finds an abandoned purse with $500 in it, and decides to spend the money on food and groceries. After seeing Harry's corpse, Debbie starts to think of death, worrying her siblings. Kevin considers buying the Alibi from the owner, Stan, an idea that Veronica doubts over its prospects.

Frank starts to consider what to do in his plan with Dottie. To get her money, Frank steals an engagement ring that Jody was planning to give to Karen. He then proposes to marry Dottie, promising to keep her memory alive after she dies; Dottie accepts the proposal. While she is in the shower, her heart transplant pager suddenly beeps; Frank intercepts the page, telling the hospital that Dottie had already passed. Lip continues assisting Professor Hearst at the university, while also helping Ian with his West Point plans. However, he is upset when Karen says she wants to end their sexual relationship, as she is in love with Jody and is certain he will propose to her.

After discovering that the donor's heart was given to someone else, a depressed Dottie thanks Frank for taking care of her, and asks him to assist her in euthanasia by paying him $2,000; she will have sex with him, knowing she will die. Frank reluctantly agrees and the two have sex, causing Dottie's heart to explode, after which Frank takes the money and the ring. Nevertheless, he is left distraught by Dottie's death and gives the ring back to Jody, who proposes to an enthusiastic Karen. Feeling guilty for spending most of the money, Fiona collects the $500 to return to the purse's owner.

However, she ultimately keeps the money when the owner insults her for living on the South Side. Reeling from the encounter, Fiona meets up with Craig to go on a date, but is left disappointed after having sex in his car. On the way home, she briefly decides to call Steve. That night, Frank goes to a church to light a candle in Dottie's honor, and seizes the opportunity to steal the church's donation money.