Ben 10: Secret of the Omnitrix
Ben notices something unusual is going on with the omnitrix after a struggle at a power plant, but keeps it to himself. Tetrax appears and informs them that the omnitrix is transmitting a self-destruct signal. Tetrax and Ben set out to find the omnitrix's creator in order to repair it before it kills the cosmos. To aid her cousin, Gwen stows away.
Released: 2007-08-10