With an early 2005 tour through their native Canada now behind them, pop-punkers Sum 41 [ tickets ] head to Japan, but will soon return to North America.

The group launches its next leg of North American shows April 7 with a two-night stand in Toronto, and a handful of subsequent Canadian and U.S. shows are confirmed so far. Details are shown below.

Tickets for most confirmed shows are on sale now, and more North American dates are expected, according to the band's website.

Also on board for the tour are Unwritten Law, which released its latest album, "Here's to the Mourning," on Feb. 1; and Hawthorne Heights, whose debut set, "Silence in Black and White," surfaced last June.

Dubbed the "Go Chuck Yourself" tour, the outing supports "Chuck," Sum 41's follow-up to 2002's "Does This Look Infected?" Released in October, the new album is named for Chuck Pelletier, a United Nations representative who, in May, helped to evacuate the group from the Democratic Republic of the Congo, where the band members were shooting a documentary about that country's longstanding civil war.

The group arrived during a time of cease-fire, but violence broke out while they were in the country.

"Everything from mortar rounds to rocket-propelled grenades and shotguns were going off as close as 40 meters from our hotel," the group wrote in a detailed account of the experience posted at its website. "Things got so bad that at one point we were all told by Chuck to get in our room shut off the lights and stay quiet and stay down. It was then that I knew things could get bad."

Pelletier eventually ushered the band members to safety, and they were ultimately evacuated by plane.

Video footage from the documentary, titled "War Child," is streaming at Sum 41's website. (Free registration is required to view it.)