“n the First Episode of ‘DEEP DOWN’ Six participants dare to descend into their own grave—still unaware of what the next 100 hours have in store. Between nervousness and anticipation, an emotional rollercoaster begins. But as soon as the doors of the tight, dark boxes close, it gets serious: how will they react to their new home?

In the second episode, the lights go out, and the participants must adapt to the new circumstances. Basic needs start to surface as they look for creative ways to bridge the time. Additionally, most of them come across a crucial object— a glimmer of hope in the darkness?

The participants are confronted with the possible consequences of their time in the box. Early psychological and physical signs begin to surface. Ronny steps into the role of amateur psychologist, while Knossi finds himself increasingly strained by fatigue. Then a trial awaits everyone: who will experience a moment of insight?

The participants’ need for sleep grows ever more urgent—but the rest they long for is denied. Uncertainty and frustration rise, and some begin demanding answers. By the next challenge at the latest, everyone realizes: in “DEEP DOWN,” deep sleep is a luxury, and self-control a decisive advantage.

In the fifth episode of DEEP DOWN, respite finally seems in sight—yet not everyone can take advantage of it. Sascha’s body rebels, and his resolve is put to its first test. The “new morning” brings back old lessons: without routines, a mental breakdown looms. Each person develops their own strategies to fight the void—then an unexpected object appears. What could it mean?

The participants confront reality for the first time—what lies buried deep within them? Repressed feelings rise to the surface, and Knossi in particular bares his heart: thoughts, fears, and desires come to light. Is this the path to true self‑discovery—or merely the start of an endless mental carousel? A choice must be made when two new objects enter the scene.

The participants wait anxiously for the consequences of their decision. How will it affect their bodies and their situation underground? The confined space, the void, the passage of time: almost everyone struggles not only with themselves but also with crushing boredom. Yet in the end, a new challenge demands their full concentration and logical thinking.

The mysterious game demands more focus than the participants are comfortable with, yet the reward promises better orientation in complete isolation. While Lewin faces challenges tied to the most basic of needs, Fibii must confront her deepest fears. Even Ronny suddenly finds himself beset by unfamiliar doubts.

After the first participant is rescued, the remaining five are stunned by a menacing force of nature. Uncertainty and fear spread rapidly, while hunger and boredom grow ever more dominant in the box-bound contestants’ daily lives. As Knossi strains to keep track of time, Lewin steels himself mentally for the gruelling hours ahead.

The participants set out to search for new objects and face a decision—but what exactly are they choosing? The outcomes range from great joy to deep disappointment: Ronny and Willy receive an extraordinary opportunity, while Knossi must deal with the consequences of a wrong choice.

The participants face a deeply personal challenge—and some reach their emotional limits in the process. Each one digs into their own interior; Ronny and Knossi are talkative, while others find it much harder. Can everyone manage to reveal a part of themselves that has long been hidden deep inside?

The challenge stirs up the participants’ emotions. In particular, Sascha is open and vulnerable, while painful memories resurface for Willi. But then Sascha’s health condition takes a dangerous turn—putting production in a difficult position.

After the second participant is rescued with great effort, those remaining struggle with exhaustion and sleep deprivation. Ronny longs for contact with the outside world, while Lewin battles his will and body. Eventually, one participant makes a surprising—but consequential—decision.

Another participant reaches the base camp and meets its sole resident so far. Two new challenges put skill and memory to the test. Knossi and another contestant get to enjoy a long-awaited change of pace. Meanwhile, Willi’s streak of bad luck continues, wearing on his patience. Even Ronny’s optimism begins to show its first cracks.

Mental deterioration reaches a new peak as the remaining participants face a fresh challenge. Their control over their own bodies is once again put to the test. Ronny becomes increasingly irritable and resistant. In the end, the participants receive unexpected encouragement for their final stretch in the box.

In the final hours of the experiment, the participants experience an intense rollercoaster of emotions. An unexpected, one-time opportunity presents itself—but not everyone is able to take it. After the release, an emotional message reaches the base camp. In the end, one question remains: What have the participants learned from this extreme experience?