Splinter and the Turtles were unaware of the Shredder's survival until months later, on one day when Leonardo goes on an outdoor morning training exercise, only to be ambushed by the Foot Clan. He is beaten close to death and sent him flying into a window of April O'Neil's antique shop apartment, where the Turtles were staying after Foot Ninjas had marauded their sewer home while they were away. Soon afterwards, the Shredder leads an assault on April's shop. Overpowered and outnumbered, the Turtles, Splinter, April and Casey Jones are forced to retreat in a walk-in cooler. The Shredder then burns down the apartment, but the Turtles and their allies evacuate and depart for Casey's grandmother's farmhouse, where they would spend the next three months recuperating.