Lena is a bored hacker who spends her nights searching for something interesting to hack on the dark web. She stumbles upon a mysterious site called Helios, which is protected by a powerful firewall that challenges her skills. She manages to hack into it, only to discover a horrifying secret: a laboratory where humans are kept in tanks and connected to machines. What is the purpose of this experiment and who is behind it? Lena will have to decide whether to expose it or keep it hidden, while risking her own life in the process.