Onside: Major League Soccer - S1 E1

2. Hell Is Real

Ohio's heated rivalry reignites. As kickoff nears, stars and managers discuss what's at stake, the will to compete, and leaving it all on the pitch.

3. Young Blood

Cavan Sullivan signs with Philly at age 14. The countdown is on for the homegrown phenom to make his debut as the youngest MLS player ever.

4. City Blues

Second-year club St. Louis CITY are under pressure to build a winning culture. A rematch against archrivals Sporting KC raises the stakes.

5. Kings of New York

Who runs NYC? A case is made in the Hudson River Derby's playoff debut. RBNY's rising star John Tolkin feels the heat of the spotlight.

6. The Window

Clubs go hunting for new talent in the summer transfer window, where deals get done—or fall apart—and stars arrive in the month-long frenzy.

7. The Big Decision

Atlanta United's long road back to title contention hits a tipping point. A Decision Day miracle sets up a Round One duel against Inter Miami and Messi.

8. Legacy

With Messi eliminated, it's anyone's MLS Cup. Riqui Puig's injury stuns the LA Galaxy as they get set to battle the New York Red Bulls for the title.