It’s been 21 days since the hundred landed on Earth. They’re the only humans to set foot on the planet in centuries… or so they thought. Facing an unknown enemy, Wells attempts to keep the group together. Clarke strikes out for Mount Weather, in search of other colonists, while Bellamy is determined to rescue his sister, no matter the cost. And back on the ship, Glass faces an unthinkable choice between the love of her life and life itself. In this pulse-pounding sequel to The 100, secrets are revealed, beliefs are challenged, and relationships are tested. And the hundred will struggle to survive the only way they can—together

Humanity is coming home. Weeks after landing on Earth, the Hundred have managed to create a sense of order amidst their wild, chaotic surroundings. But their delicate balance comes crashing down with the arrival of new dropships from space. These new arrivals are the lucky ones-back on the Colony, the oxygen is almost gone-but after making it safely to Earth, GLASS's luck seems to be running out. CLARKE leads a rescue party to the crash site, ready to treat the wounded, but she can't stop thinking about her parents who may still be alive. Meanwhile, WELLS struggles to maintain his authority despite the presence of the Vice Chancellor and his armed guards, and BELLAMY must decide whether to face or flee the crimes he thought he'd left behind. It's time for the Hundred to come together and fight for the freedom they've found on Earth, or risk losing everything-and everyone-they love.