Sigma intercepts Ultron , and the two forge an alliance .
Needing the six Infinity Stones to do so , Death deceives Thanos and Ultron into aiding her , granting Thanos the Space Stone and sending Ultron to retrieve the Reality Stone from Abel City .
Ultron intercepts Ultron , and the two forge an alliance .
Needing the six Infinity Stones to do so , Death deceives Thanos and Ultron into aiding her , granting Thanos the Space Stone and sending Ultron to retrieve the Reality Stone from Abel City .