"Tower of God" is a popular webtoon that follows the journey of a boy named Bam as he enters a mysterious tower in search of his friend, Rachel. The tower is filled with challenges and powerful beings, where each floor presents unique trials that test the characters' strength, intelligence, and resolve. As Bam climbs the tower, he encounters various allies and enemies, each with their own motives and backstories. The story explores themes of friendship, betrayal, and the quest for power, making it an engaging adventure filled with twists and emotional moments.