TMNT and Disney crossover (book 3)

After the Kraang invaded New York City, the big four rests at Lilo's old cabin and April's farmhouse until Leo and Anna recover from the shredder and Ursela. Rapunzel builds a new robot, Baymax and a new discovery will come when the big four has a new little brother, Hiro Hamada. And when they become super heroes they will fight to take back the city.