As 9-1-1 heads toward its milestone tenth season, Oliver Stark is already giving fans clues about what’s next for Evan “Buck” Buckley—and it sounds like Buck’s life is about to become more complicated than ever. (Decider)

Buck’s Biggest Storyline Is Just Beginning

The Season 9 finale left Buck facing a life-changing decision when he stepped forward to foster Theo, the biological son he fathered through sperm donation years earlier after the child’s parents died in a tragic accident. (Cinemablend)

In several post-finale interviews, Stark explained that Buck doesn’t necessarily view himself as a father yet. Instead, he sees the decision as a responsibility he could not walk away from. According to the actor, Season 10 will explore the emotional, legal, and personal challenges that come with that choice. (Cinemablend)

For fans, it means Buck is entering entirely new territory.

Oliver Stark Says Difficult Times Are Ahead

While discussing the finale, Stark hinted that Buck’s journey won’t be easy.

The actor suggested that caring for Theo will force Buck to reevaluate many aspects of his life, including his priorities, relationships, and future plans. The storyline is expected to become one of the emotional centerpieces of Season 10. (People.com)

After years of watching Buck mature from an impulsive rookie into one of the 118’s most dependable firefighters, viewers may finally see him take on his most important responsibility yet. (Decider)

Season 10 Could Be Buck’s Most Important Chapter

In a May 2026 interview, Stark reflected on several major Season 9 storylines, including Buck’s struggles, emotional growth, and evolving relationships. He described Season 10 as an opportunity to explore how caring for a child changes a person’s perspective on life. (Decider)

The actor also expressed gratitude for the show’s dedicated fanbase as 9-1-1 prepares to celebrate its tenth season on ABC. (Decider)

Fans Continue To Celebrate Buck’s Journey

Over nine seasons, Buck has become one of the franchise’s most popular characters.

From surviving lightning strikes and near-fatal accidents to becoming a respected firefighter and trusted friend, his growth has been one of the defining stories of the series. (TV Insider)

Many fans are especially excited to see how Buck balances his new responsibilities while continuing to serve with the 118.

The relationship between Buck and Eddie remains another major talking point among viewers, with cast members continuing to praise the strength of their friendship heading into Season 10. (Cinemablend)

Oliver Stark Beyond 9-1-1

Outside the series, Stark has remained active with fan events and media appearances throughout 2026. He recently participated in fan conventions and interviews celebrating the show’s success and discussing the future of the franchise. (Reddit)

He was also featured in SUCCESS Magazine’s May/June 2026 issue, where he discussed resilience, career growth, and his journey from London to becoming one of American television’s most recognizable firefighters. (Instagram)

What Happens Next?

With Season 10 officially renewed and expected to arrive in Fall 2026, Buck’s foster-parent storyline appears set to become one of the biggest arcs of the new season. (Good Housekeeping)

If Oliver Stark’s comments are any indication, fans should prepare for a season filled with emotional challenges, personal growth, and difficult decisions.

And for Buck, the next emergency may not be a fire, explosion, or disaster.

It may be learning how to become the parent Theo needs. (Cinemablend)