Seven Days in the Mudslide - Episode 4

After a flash flood someone cries out, "I'm trapped in the mud," struggling in a hollowed space with no signal and almost no water. At the company, colleagues learn Zack missed his first Path to the Throne round; his last phone pinged on the mountain road hit by the flood, so they suspect he's missing because of the disaster. The trapped person decides to act: they discover a hollow cavity and conclude that opening the window could let them climb out. The episode ends with them determined to pry the window, fate unresolved.