It's a new year and the TMNT and Master Splinter look to the future even as they struggle to come to grips with past mysteries. Meanwhile, General Krang grows increasingly impatient with Baxter Stockman, who is prepared to unleash a horrific new weapon to assist Old Hob in his dark quest to return the turtles and their sensei to StockGen Research, where lab intern April O'Neil continues to suspect all is not what it seems.