Do you ever sit at the bottom of a pool and have a conversation with yourself? About life, and where you're going, what you want to do, your dreams, your doubts, your hungers? Do you involve Siri in that conversation? And do songs keep popping up in your head randomly? This is what freediver and actor Daniella Birtley goes through mentally when she's holding her breath. All these voices op up in her head. Literal thought bubbles! Luckily, she's a talented voice-over artist as well, so Daan Verhoeven could make a movie about it.