It was just another day on the BMX street course for Billy Cruz.

He lunged down the pipe, rode the ramp high into the air, and tweaked his bike for a perfect Superman -- when suddenly he lost his grip on the seat.

Cruz hit the concrete -- hard -- and wound up in the hospital with several broken bones.

Six long weeks later, Billy finally got back on his bike.

But now, he can't help but hold back a bit on his tricks, and his scores are starting to suffer.

To add insult to injury, Billy's best friend, Penny, has been acting strange since the accident.