As the Panthers get ready to face the dominating Laribee Lions, the 2000 State Champ quarterback, Lucas Mize is set to join the team.Smash catches his chance to convince a college scout of his talents. A focused Tim quits drinking. Jason's suspicions of Lyla and Tim's affair grow. Tyra and Billy set up an after game homecoming party.

The Panthers prepare for their first playoff game.Coach Taylor gets distracted as he has to come up with a solution to Smash's use of drugs. Tyra and Julie befriend while Riggins bonds with his alienated father.Buddy learns about Jason and Lyla's engagement.

An chemical spill near Dillon High School forces Coach Taylor and the Panthers to seek another facility in which to play the crucial State Semi-Final game.

Tim and Jason go to Mexico as Street hopes to explore experimental surgery. Riggins, who is worried about Street, turns to Lyla Garrity, who's busy helping a newcomer acclimate to Dillon. Meanwhile, Coach Taylor decides on a big career move that will change his life. A development in a police search deeply affects the lives of Tyra and Landry.

Dillon County is hit by a tornado with Laribee High School affected by the damage forcing both rivals to share Dillon's resources. Julie and Tami adjust to Tim Riggins' living in their house, and tension builds between Landry and Tyra.

Smash's hunt for a college football scholarship turns into something completely different. Tami comes across her high school boyfriend, whose job as a real estate magnate has brought him to Dillon, making Coach Taylor jealous.

Jason is offered a life-changing opportunity. Riggins goes after Lyla this time using more unconventional methods.

Tami embarrasses herself with the superintendent. Tyra breaks with Landry to take up with Cash, the new bad boy in town. Julie advises Matt who is upset with his mother who has come to help with grandma. Smash has an emotional goodbye with Coach.

Tim returns to find both good and bad surprises. Coach has to change his plans and reluctantly supports Tami when she feels obligated to help Tyra out of a jam. Saracen has second thoughts and clashes with Shelby. Lyla and Mindy team up.

Coach tempers high expectations for East Dillon's impending season; Vince and Luke work to recruit a new player for the Lions' squad; Dillon bids farewell to two alumni as they prepare to leave for college.