Kevin, Lucy, Mac and Felicia head out to Canada in search of Ryan but find his motel room empty. A series of mishaps leads to Lucy being left alone at the motel and Kevin being mistaken for Ryan and getting arrested. Everything is cleared up at the police station. Lucy catches up but ends up being left behind again.

With everyone hot on his trail, Ryan heads to an amusement park with the baby. Felicia, Mac and Kevin split up to locate him. Lucy arrives, and mistakes Ryan for Kevin; he grabs her. Felicia finds Lucy bound and gagged and unties her. They spy Ryan. Or is it Kevin? Lucy kisses him to find out. Yuck- it's Ryan. He ties them both up and bolts with the baby. Mac frees them and jumps Kevin (thinking he's Ryan). Later, they find Ryan riding the carousel with Georgie. Ryan disappears but leaves the baby. Felicia embraces Georgie, but suddenly realizes: Kevin is gone! The brothers struggle in the house of mirrors, with Ryan disappearing in the resulting fire.

Stone Gets Tested 
Robin realizes that Stone is dyslexic; she suggests he get help from Kevin. Kevin tests Stone, who complains he has headaches all the time and can't shake his flu. Kevin asks Tony to help identify the problem. Tony throws a welcome home party for Felicia and Georgie. He later admits to Bobbie that the party was his attempt to make up for Frisco's absence.

Carmine recognizes Mac at the Outback- he's the man who was questioning him about Sonny. Mac covers for Ned and lies that he was only poking around for Robin's sake. Tony tells Stone that there is no neurological problem causing his dyslexia, but advises him to care for his swollen glands. Now that Robin is on the pill, she and Stone have sex without a condom. Kevin starts tutoring Stone on how to read with dyslexia. Stone has a killer headache, so Robin suggests a physical exam. Stone complains to Kevin about the cold he can't shake. Kevin orders a series of blood tests- including an HIV test.

Kevin informs Stone that his tests are in- he's HIV-positive. A numb Stone runs to Robin's, but can't bring himself to tell her and bolts. Robin demands that Kevin tell her what's wrong, but he keeps Stone's diagnosis confidential. Frisco admits to Tony he wants to settle down, but doubts Felicia will let him. Frisco takes Felicia and Maxie on a picnic and sings Felicia a love song. When ants attack, Felicia jumps up and spies Stone crying. She calls out; he runs away. 

Return of the Spy 
Kevin presses Tony about his feelings for Felicia, but Tony insists that he's just like a big brother to her. Bobbie is not so sure. Tony offers to take care of Georgie while Felicia takes a shower. Later on, when Felicia gets up to warm a bottle for Georgie, she has company: Frisco is standing in her doorway. A shocked Felicia rushes into Frisco's arms. They talk, and she admits she was hurt that he wasn't there for Georgie's birth and her kidnapping ordeal. Frisco hugs Maxie and meets Georgie for the first time. He explains he's in PC with Rakeem (a WSB agent), and plans to stay this time. A skeptical Felicia orders Frisco to sleep on the couch. The next day, Felicia goes out and leaves Frisco with the girls. A frazzled Frisco calls Rakeem for backup. He forgot how hard it is to be a father!

After putting the girls to bed, Frisco seduces Felicia. They make love, and Frisco vows that he's in PC to stay. The next morning, Rakeem stops by and informs Frisco that they've got a job in Paris. Frisco says that he's staying put, but Felicia interrupts: Go! Frisco says a tearful good-bye to Felicia and then bids farewell to Tony. Bobbie laments to Kevin that Tony can't open up to her. But across town, Tony is opening up to Felicia.

Stone Shot! 
Robin intercepts Stone at Luke's Club, but he orders her to go home, Suddenly, Scully's men enter the club. They fire at Stone and Robin, then run upstairs to Sonny's apartment, where Brenda is taking a shower. Stone is shot in the leg. His terror rises as his blood splashes over Robin. Stone bolts out of the club like a wounded animal. Robin rushes upstairs and embraces a shaken Brenda; she's also uneasy about Stone's bizarre behavior.

A frantic Robin searches for Stone. She finally locates him at the motel where they first made love. He tells her that he's HIV-positive, and Robin convinces him to get some help. At the hospital, Kevin informs Steve of Stone's condition. Steve treats Stone, and suggests they discuss long-term care. Alan persuades Robin to take a blood test. 

Later, Stone admits to Alan that he once had a girlfriend who was a drug user. Alan informs Stone that he's got advanced AIDS, so Stone begins therapy right away. Robin's test is negative, but she has to be tested regularly until she's in the clear. Alan releases Stone, but warns him to take it easy. When Stone gets home, Sonny asks why he ran away from the shooting. Stone blurts out that he has AIDS and begs Sonny to keep quiet. Sonny embraces Stone and won't let him move out. When Brenda asks Sonny what's going on, he's mum. Brenda assumes it has to do with Lily. Kevin tells a distraught Sonny that there's no cure for Stone's virus.

The train for Ned and Lois's wedding heads out of PC. Mac asks Stone about his wound, but he sidesteps the question. Stone realizes that Brenda feels shut out, so he allows Sonny to tell her that he has AIDS. Robin admits to a shocked Brenda that she and Stone had unprotected sex; Brenda warns her friend to be cautious. Later, Stone laments to Robin that sex isn't such a good idea and she curses the disease for tearing them apart.