IDW’s Teenage Mutant Ninja Turtles comics synthesize and remix 40 years of Turtles lore and transform it into a single, sprawling epic! This sourcebook collects and catalogs every character, every location, and every notable event—and serves as a comprehensive companion to that epic—into four issues by writer Patrick Ehlers. Issue #1 tracks the complete story of the friendship and rivalry of Oroku Saki and Hamato Yoshi, from friends to foes, from past to present, from astral plane to solid ground. Where the immortal Shredder builds an army of criminals, ninjas, and beasts, the resurrected Splinter and his Turtle sons grow their influence through family and fellowship. These are the humans and mutants caught up in this life span–defying war for control of the Foot Clan.