This document proposes a new global transmedia campaign called H2ome that would use interactive storytelling across multiple platforms to inspire worldwide action on environmental issues. It describes a dire situation where traditional engagement efforts have failed as the planet faces rising seas, extinction, and pollution. H2ome would create an immersive fictional world told through video, games, mobile apps and more to motivate audiences, especially youth, to participate in real-world environmental activities and advocacy. It aims to sustain long-term engagement through an evolving story and new challenges. The proposal outlines the creative team and partners, digital platform, $1.6 million annual budget for three years, and goals of widespread participation and action to address the growing ecological crisis.