Though we've previously seen Bryan Cranston transformed into the late President Lyndon B. Johnson for Jay Roach's All the Way, we now get to see him channel his best Commander-in-Chief thanks to the TV movie's first trailer. Cranston underwent a physical transformation for this role to help him embody the character, though it's not a one-man show: Anthony Mackie will be playing Martin Luther King, Jr., with Melissa Leo as Lady Bird Johnson, Bradley Whitford as Hubert Humphrey, and Stephen Root as J. Edgar Hoover.

According to Roach, the biopic begins just after John F. Kennedy’s assassination and "covers the amazing 11-month journey from when LBJ takes office after JFK’s assassination, through LBJ’s fight to pass the 1964 Civil Rights Act and his own presidential campaign, culminating on the night LBJ is actually elected to the office – no longer the ‘accidental President.’" Look for All the Way to debut on HBO Saturday, May 21st at 8pm.

Watch the first trailer for All the Way below:

HBO Films presents All the Way, starring Bryan Cranston as Lyndon B. Johnson, Saturday, May 21 at 8pm on HBO.

Roach also commented on Cranston's performance as LBJ in All the Way and how he believes it will transport audiences through time:

Physically and emotionally Bryan completely channels LBJ. We just filmed him and Lady Bird in the Oval Office, after JFK’s assassination. LBJ has arrived as the ‘accidental President.’ He’s almost overwhelmed. In spiritual support, Lady Bird touches his cheek. We melted, like we went back in time and witnessed a private, heart-wrenching moment between these two great people.

For more on All the Way be sure to check out some of our recent coverage below:

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Image via HBO