The Heroes Return is a two-part series which revolves around Milli, Geo, and Bot returning to thier superhero roots as a serious threat rises to destroy Umi City.


Ten years in the future, Team Umizoomi retired due to Doormouse's new police force, and has taken up different interests, with no mention of whether or not the Team will return to heroics. Team Umizoomi eventually learns of a serious threat that will put Umi City in hot water and force Milli, Geo, and Bot to get back into action.



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