Season 4 begins with Axe closing ranks, determined to destroy Taylor. No longer U.S. Attorney, Chuck struggles to regain power. Taylor does what it takes to keep their new company afloat.

Gene convinces Tina and Louise to help him save a misunderstood plankton blob from being destroyed by a yacht club.

Leonard, an acting teacher, contemplates moving back to New York. The Guy connects with old high-school friends Sarah and Brian, who are visiting the city under difficult circumstances.

When a super typhoon threatens a small Pacific island, Elizabeth tries to relocate its population before the storm makes landfall. Also, Henry gives a speech to an evangelical group about climate change.

After months of planning, the NCIS family celebrates the wedding of Kensi and Deeks. Also, an old acquaintance, Anatoli Kirkin, pays Deeks a surprise visit on his wedding day and he isn’t alone.

Secretly furloughed from prison due to failing health, Lex Luthor visits his sister, Lena, to seek her help finding a cure. Savvy as ever, Lena is suspicious of Lex's motives but when she’s faced with a life and death situation, she must decide how she truly feels about her brother. Meanwhile, Supergirl and J'onn face off against Manchester Black. James' sister Kelly comes to town.

As Bart begins to excel in video game competitions, Homer discovers a passion for coaching him; Lisa attempts to bring Homer back to reality, but the plan causes chaos.

An outsider's arrival forces Alexandria to rehash devastating old wounds; eye-opening secrets from the past are revealed.

Matt LeBlanc samples the new Aston Martin V8 Vantage on track, while Rory Reid tests the self-proclaimed ‘best car in the world’, the Rolls-Royce Phantom. Chris Harris explains why a Ford Fiesta is better than a Lamborghini. Stephen Mangan is the studio guest.