An anthropomorphic rat named Master Splinter raises four mutant turtles down in the sewers. They train in the arts of ninjitsu, as they face off against the foot clan. The foot is lead by a mysterious kingpin, who has plans to take over New York City, and then the world after that. Meanwhile, Channel 6 news reporter, April O'Neal, finds out she may had a hand in creating our heroes in a half shell sometime in the past.

Based on the popular toy brand. An average construction worker is believed to be the prophesied "special", so he's recruited by the resistance to help stop President Business from freezing Lego world in a permanent stasis forever; using the infamous legendary weapon known only as the Kraggle...otherwise known as Krazy Glue.