Running Wild with Bear Grylls

In the season premiere of "Running Wild with Bear Grylls," music sensation Nick Jonas joins Bear for an icy journey across the Sierra Nevada Mountains. With a blizzard bearing down, Nick and Bear must rappel down a sheer cliff before navigating an avalanche-prone mountain face. Building camp under harsh conditions, the two feast on a frozen bird, and eventually make a heart-stopping swim across a freezing lake. Along the way, Nick discusses his career, his family, and reveals how his struggle with diabetes gave him the drive to reach the pinnacle of the music world.

Julianne Hough and Bear initially navigate the unforgiving African terrain on ATV and must elude a pack of elephants that block their path. Rappelling from a sheer cliff, they enter a remote canyon where they evade big cats, come face-to-face with a massive snake, and navigate treacherous waterfalls before reaching their extraction point. As they make their way through the dangerous and unpredictable landscape, Julianne shares her personal story of adolescence, and the positivity and unwavering determination that got her to the top.

Dropped along the wind swept coastline of Ireland, television icon Courteney Cox and Bear must navigate jagged peaks and descend sheer cliffs, only to be battered by ocean swells. As they contend with the elements, the two struggle to stay warm and must subsist on a meager diet of maggots sourced from a rotting sheep. Courteney's limits will be tested, but her spirit shines while sharing insights on life, loss and the joy of motherhood.

After being plucked from a freight train via helicopter, Bear and NBA legend Shaquille O'Neal battle dense forest, blood-sucking leeches and 200 ft. sheer rock faces in the remote Adirondacks, in search of their extraction point. Along the way, O'Neal's infectious energy, tales of legendary NBA moments and unwavering drive to help others reminds us why he is beloved around the world. The Wild will dole out everything it's got, but it's never met a force of nature like Shaquille O'Neal.

After roaring across crystal-clear waters in a speedboat, Bear and Lindsey must strip down and swim to shore before inching their way along the rugged coastline. After rappelling down a sheer rock wall, the two get inventive and use a spear-gun to traverse a hundred-foot deep chasm. With the sun setting, they collect a dinner of sea urchins and Bear challenges Lindsey to a swimming competition with hilarious results. Along the way Lindsey shares her journey of love, Olympic glory, and displays the focus and determination that has made her one of the most successful female athletes of all time.

Adrift on the open sea in a small rowboat, Mel B is rescued by Bear in a way you'll have to see to believe. Once ashore, the two must navigate two hundred foot cliffs, impenetrable terrain, and a final descent that sends Mel into full breakdown mode. Things don't get any easier when Bear is stung by a jellyfish, forcing Mel to employ some unusual first aid skills. Along the way, Mel details her humble upbringing, an exclusive take on the Spice Girls' triumph, and reveals the grit and determination that allowed her to conquer the world.

Plucked from a medieval tower along the Corsica coastline, Bear and Super Bowl Champion Marshawn Lynch are dropped deep in a rugged mountain range where they navigate cliffs, dark chasms, and come face-to-face with the secretive French Foreign Legion. Spying a wild hog, the pair pursues the beast, but securing it for dinner will require Marshawn to dig deeper than he ever did on the gridiron. Along the way, Marshawn details his upbringing in Oakland, his "beast" mentality on the field, and his unexpected retirement.

Breakout star of "This is Us" and "The People vs. OJ Simpson," Sterling K. Brown, joins Bear for an icy journey across the high mountains of Colorado. After a harrowing delivery into frozen wilderness via helicopter, Sterling and Bear battle plummeting temperatures as they descend a shear rock face with near disastrous consequences, track an elusive deer before settling on a less-than-appetizing dinner option, and rappel a massive frozen waterfall with heart-stopping results. Along the way, Sterling reveals the struggles of losing his father as a young boy, his commitment to family, and recounts his landmark Emmy victory.

In honor of Red Nose Day, Oscar-winning actress Julia Roberts accompanies Bear on a two-day wilderness trek to deliver lifesaving vaccines to a remote Kenyan village.

After a breathtaking repel from a helicopter, Bear and Hollywood sweetheart Vanessa Hudgens evade a boulder avalanche, summit a massive dormant volcano, and come face-to-face with a rattlesnake, which makes for a cringe-worthy dinner. Along the way, Vanessa shares insights on her meteoric rise to stardom and draws strength and determination from the memory of her late father.